sys/dev/netif/bge/if_bge.c

   1 /*
   2  * Copyright (c) 2001 Wind River Systems
   3  * Copyright (c) 1997, 1998, 1999, 2001
   4  *      Bill Paul <wpaul@windriver.com>.  All rights reserved.
   5  *
   6  * Redistribution and use in source and binary forms, with or without
   7  * modification, are permitted provided that the following conditions
   8  * are met:
   9  * 1. Redistributions of source code must retain the above copyright
  10  *    notice, this list of conditions and the following disclaimer.
  11  * 2. Redistributions in binary form must reproduce the above copyright
  12  *    notice, this list of conditions and the following disclaimer in the
  13  *    documentation and/or other materials provided with the distribution.
  14  * 3. All advertising materials mentioning features or use of this software
  15  *    must display the following acknowledgement:
  16  *      This product includes software developed by Bill Paul.
  17  * 4. Neither the name of the author nor the names of any co-contributors
  18  *    may be used to endorse or promote products derived from this software
  19  *    without specific prior written permission.
  20  *
  21  * THIS SOFTWARE IS PROVIDED BY Bill Paul AND CONTRIBUTORS ``AS IS'' AND
  22  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  24  * ARE DISCLAIMED.  IN NO EVENT SHALL Bill Paul OR THE VOICES IN HIS HEAD
  25  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  26  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  27  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  28  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  29  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  30  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
  31  * THE POSSIBILITY OF SUCH DAMAGE.
  32  *
  33  * $FreeBSD: src/sys/dev/bge/if_bge.c,v 1.3.2.39 2005/07/03 03:41:18 silby Exp $
  34  */
  35
  36 /*
  37  * Broadcom BCM570x family gigabit ethernet driver for FreeBSD.
  38  *
  39  * Written by Bill Paul <wpaul@windriver.com>
  40  * Senior Engineer, Wind River Systems
  41  */
  42
  43 /*
  44  * The Broadcom BCM5700 is based on technology originally developed by
  45  * Alteon Networks as part of the Tigon I and Tigon II gigabit ethernet
  46  * MAC chips. The BCM5700, sometimes refered to as the Tigon III, has
  47  * two on-board MIPS R4000 CPUs and can have as much as 16MB of external
  48  * SSRAM. The BCM5700 supports TCP, UDP and IP checksum offload, jumbo
  49  * frames, highly configurable RX filtering, and 16 RX and TX queues
  50  * (which, along with RX filter rules, can be used for QOS applications).
  51  * Other features, such as TCP segmentation, may be available as part
  52  * of value-added firmware updates. Unlike the Tigon I and Tigon II,
  53  * firmware images can be stored in hardware and need not be compiled
  54  * into the driver.
  55  *
  56  * The BCM5700 supports the PCI v2.2 and PCI-X v1.0 standards, and will
  57  * function in a 32-bit/64-bit 33/66Mhz bus, or a 64-bit/133Mhz bus.
  58  *
  59  * The BCM5701 is a single-chip solution incorporating both the BCM5700
  60  * MAC and a BCM5401 10/100/1000 PHY. Unlike the BCM5700, the BCM5701
  61  * does not support external SSRAM.
  62  *
  63  * Broadcom also produces a variation of the BCM5700 under the "Altima"
  64  * brand name, which is functionally similar but lacks PCI-X support.
  65  *
  66  * Without external SSRAM, you can only have at most 4 TX rings,
  67  * and the use of the mini RX ring is disabled. This seems to imply
  68  * that these features are simply not available on the BCM5701. As a
  69  * result, this driver does not implement any support for the mini RX
  70  * ring.
  71  */
  72
  73 #include "opt_polling.h"
  74
  75 #include <sys/param.h>
  76 #include <sys/bus.h>
  77 #include <sys/endian.h>
  78 #include <sys/kernel.h>
  79 #include <sys/ktr.h>
  80 #include <sys/interrupt.h>
  81 #include <sys/mbuf.h>
  82 #include <sys/malloc.h>
  83 #include <sys/queue.h>
  84 #include <sys/rman.h>
  85 #include <sys/serialize.h>
  86 #include <sys/socket.h>
  87 #include <sys/sockio.h>
  88 #include <sys/sysctl.h>
  89
  90 #include <net/bpf.h>
  91 #include <net/ethernet.h>
  92 #include <net/if.h>
  93 #include <net/if_arp.h>
  94 #include <net/if_dl.h>
  95 #include <net/if_media.h>
  96 #include <net/if_types.h>
  97 #include <net/ifq_var.h>
  98 #include <net/vlan/if_vlan_var.h>
  99 #include <net/vlan/if_vlan_ether.h>
 100
 101 #include <dev/netif/mii_layer/mii.h>
 102 #include <dev/netif/mii_layer/miivar.h>
 103 #include <dev/netif/mii_layer/brgphyreg.h>
 104
 105 #include <bus/pci/pcidevs.h>
 106 #include <bus/pci/pcireg.h>
 107 #include <bus/pci/pcivar.h>
 108
 109 #include <dev/netif/bge/if_bgereg.h>
 110
 111 /* "device miibus" required.  See GENERIC if you get errors here. */
 112 #include "miibus_if.h"
 113
 114 #define BGE_CSUM_FEATURES       (CSUM_IP | CSUM_TCP | CSUM_UDP)
 115 #define BGE_MIN_FRAME           60
 116
 117 static const struct bge_type bge_devs[] = {
 118         { PCI_VENDOR_3COM, PCI_PRODUCT_3COM_3C996,
 119                 "3COM 3C996 Gigabit Ethernet" },
 120
 121         { PCI_VENDOR_ALTEON, PCI_PRODUCT_ALTEON_BCM5700,
 122                 "Alteon BCM5700 Gigabit Ethernet" },
 123         { PCI_VENDOR_ALTEON, PCI_PRODUCT_ALTEON_BCM5701,
 124                 "Alteon BCM5701 Gigabit Ethernet" },
 125
 126         { PCI_VENDOR_ALTIMA, PCI_PRODUCT_ALTIMA_AC1000,
 127                 "Altima AC1000 Gigabit Ethernet" },
 128         { PCI_VENDOR_ALTIMA, PCI_PRODUCT_ALTIMA_AC1001,
 129                 "Altima AC1002 Gigabit Ethernet" },
 130         { PCI_VENDOR_ALTIMA, PCI_PRODUCT_ALTIMA_AC9100,
 131                 "Altima AC9100 Gigabit Ethernet" },
 132
 133         { PCI_VENDOR_APPLE, PCI_PRODUCT_APPLE_BCM5701,
 134                 "Apple BCM5701 Gigabit Ethernet" },
 135
 136         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5700,
 137                 "Broadcom BCM5700 Gigabit Ethernet" },
 138         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5701,
 139                 "Broadcom BCM5701 Gigabit Ethernet" },
 140         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5702,
 141                 "Broadcom BCM5702 Gigabit Ethernet" },
 142         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5702X,
 143                 "Broadcom BCM5702X Gigabit Ethernet" },
 144         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5702_ALT,
 145                 "Broadcom BCM5702 Gigabit Ethernet" },
 146         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5703,
 147                 "Broadcom BCM5703 Gigabit Ethernet" },
 148         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5703X,
 149                 "Broadcom BCM5703X Gigabit Ethernet" },
 150         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5703A3,
 151                 "Broadcom BCM5703 Gigabit Ethernet" },
 152         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5704C,
 153                 "Broadcom BCM5704C Dual Gigabit Ethernet" },
 154         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5704S,
 155                 "Broadcom BCM5704S Dual Gigabit Ethernet" },
 156         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5704S_ALT,
 157                 "Broadcom BCM5704S Dual Gigabit Ethernet" },
 158         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5705,
 159                 "Broadcom BCM5705 Gigabit Ethernet" },
 160         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5705F,
 161                 "Broadcom BCM5705F Gigabit Ethernet" },
 162         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5705K,
 163                 "Broadcom BCM5705K Gigabit Ethernet" },
 164         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5705M,
 165                 "Broadcom BCM5705M Gigabit Ethernet" },
 166         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5705M_ALT,
 167                 "Broadcom BCM5705M Gigabit Ethernet" },
 168         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5714,
 169                 "Broadcom BCM5714C Gigabit Ethernet" },
 170         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5714S,
 171                 "Broadcom BCM5714S Gigabit Ethernet" },
 172         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5715,
 173                 "Broadcom BCM5715 Gigabit Ethernet" },
 174         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5715S,
 175                 "Broadcom BCM5715S Gigabit Ethernet" },
 176         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5720,
 177                 "Broadcom BCM5720 Gigabit Ethernet" },
 178         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5721,
 179                 "Broadcom BCM5721 Gigabit Ethernet" },
 180         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5722,
 181                 "Broadcom BCM5722 Gigabit Ethernet" },
 182         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5723,
 183                 "Broadcom BCM5723 Gigabit Ethernet" },
 184         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5750,
 185                 "Broadcom BCM5750 Gigabit Ethernet" },
 186         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5750M,
 187                 "Broadcom BCM5750M Gigabit Ethernet" },
 188         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5751,
 189                 "Broadcom BCM5751 Gigabit Ethernet" },
 190         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5751F,
 191                 "Broadcom BCM5751F Gigabit Ethernet" },
 192         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5751M,
 193                 "Broadcom BCM5751M Gigabit Ethernet" },
 194         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5752,
 195                 "Broadcom BCM5752 Gigabit Ethernet" },
 196         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5752M,
 197                 "Broadcom BCM5752M Gigabit Ethernet" },
 198         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5753,
 199                 "Broadcom BCM5753 Gigabit Ethernet" },
 200         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5753F,
 201                 "Broadcom BCM5753F Gigabit Ethernet" },
 202         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5753M,
 203                 "Broadcom BCM5753M Gigabit Ethernet" },
 204         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5754,
 205                 "Broadcom BCM5754 Gigabit Ethernet" },
 206         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5754M,
 207                 "Broadcom BCM5754M Gigabit Ethernet" },
 208         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5755,
 209                 "Broadcom BCM5755 Gigabit Ethernet" },
 210         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5755M,
 211                 "Broadcom BCM5755M Gigabit Ethernet" },
 212         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5756,
 213                 "Broadcom BCM5756 Gigabit Ethernet" },
 214         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5761,
 215                 "Broadcom BCM5761 Gigabit Ethernet" },
 216         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5761E,
 217                 "Broadcom BCM5761E Gigabit Ethernet" },
 218         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5761S,
 219                 "Broadcom BCM5761S Gigabit Ethernet" },
 220         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5761SE,
 221                 "Broadcom BCM5761SE Gigabit Ethernet" },
 222         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5764,
 223                 "Broadcom BCM5764 Gigabit Ethernet" },
 224         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5780,
 225                 "Broadcom BCM5780 Gigabit Ethernet" },
 226         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5780S,
 227                 "Broadcom BCM5780S Gigabit Ethernet" },
 228         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5781,
 229                 "Broadcom BCM5781 Gigabit Ethernet" },
 230         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5782,
 231                 "Broadcom BCM5782 Gigabit Ethernet" },
 232         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5784,
 233                 "Broadcom BCM5784 Gigabit Ethernet" },
 234         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5785F,
 235                 "Broadcom BCM5785F Gigabit Ethernet" },
 236         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5785G,
 237                 "Broadcom BCM5785G Gigabit Ethernet" },
 238         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5786,
 239                 "Broadcom BCM5786 Gigabit Ethernet" },
 240         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5787,
 241                 "Broadcom BCM5787 Gigabit Ethernet" },
 242         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5787F,
 243                 "Broadcom BCM5787F Gigabit Ethernet" },
 244         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5787M,
 245                 "Broadcom BCM5787M Gigabit Ethernet" },
 246         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5788,
 247                 "Broadcom BCM5788 Gigabit Ethernet" },
 248         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5789,
 249                 "Broadcom BCM5789 Gigabit Ethernet" },
 250         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5901,
 251                 "Broadcom BCM5901 Fast Ethernet" },
 252         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5901A2,
 253                 "Broadcom BCM5901A2 Fast Ethernet" },
 254         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5903M,
 255                 "Broadcom BCM5903M Fast Ethernet" },
 256         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5906,
 257                 "Broadcom BCM5906 Fast Ethernet"},
 258         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5906M,
 259                 "Broadcom BCM5906M Fast Ethernet"},
 260         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM57760,
 261                 "Broadcom BCM57760 Gigabit Ethernet"},
 262         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM57780,
 263                 "Broadcom BCM57780 Gigabit Ethernet"},
 264         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM57788,
 265                 "Broadcom BCM57788 Gigabit Ethernet"},
 266         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM57790,
 267                 "Broadcom BCM57790 Gigabit Ethernet"},
 268         { PCI_VENDOR_SCHNEIDERKOCH, PCI_PRODUCT_SCHNEIDERKOCH_SK_9DX1,
 269                 "SysKonnect Gigabit Ethernet" },
 270
 271         { 0, 0, NULL }
 272 };
 273
 274 #define BGE_IS_JUMBO_CAPABLE(sc)        ((sc)->bge_flags & BGE_FLAG_JUMBO)
 275 #define BGE_IS_5700_FAMILY(sc)          ((sc)->bge_flags & BGE_FLAG_5700_FAMILY)
 276 #define BGE_IS_5705_PLUS(sc)            ((sc)->bge_flags & BGE_FLAG_5705_PLUS)
 277 #define BGE_IS_5714_FAMILY(sc)          ((sc)->bge_flags & BGE_FLAG_5714_FAMILY)
 278 #define BGE_IS_575X_PLUS(sc)            ((sc)->bge_flags & BGE_FLAG_575X_PLUS)
 279 #define BGE_IS_5755_PLUS(sc)            ((sc)->bge_flags & BGE_FLAG_5755_PLUS)
 280
 281 typedef int     (*bge_eaddr_fcn_t)(struct bge_softc *, uint8_t[]);
 282
 283 static int      bge_probe(device_t);
 284 static int      bge_attach(device_t);
 285 static int      bge_detach(device_t);
 286 static void     bge_txeof(struct bge_softc *);
 287 static void     bge_rxeof(struct bge_softc *);
 288
 289 static void     bge_tick(void *);
 290 static void     bge_stats_update(struct bge_softc *);
 291 static void     bge_stats_update_regs(struct bge_softc *);
 292 static int      bge_encap(struct bge_softc *, struct mbuf **, uint32_t *);
 293
 294 #ifdef DEVICE_POLLING
 295 static void     bge_poll(struct ifnet *ifp, enum poll_cmd cmd, int count);
 296 #endif
 297 static void     bge_intr(void *);
 298 static void     bge_enable_intr(struct bge_softc *);
 299 static void     bge_disable_intr(struct bge_softc *);
 300 static void     bge_start(struct ifnet *);
 301 static int      bge_ioctl(struct ifnet *, u_long, caddr_t, struct ucred *);
 302 static void     bge_init(void *);
 303 static void     bge_stop(struct bge_softc *);
 304 static void     bge_watchdog(struct ifnet *);
 305 static void     bge_shutdown(device_t);
 306 static int      bge_suspend(device_t);
 307 static int      bge_resume(device_t);
 308 static int      bge_ifmedia_upd(struct ifnet *);
 309 static void     bge_ifmedia_sts(struct ifnet *, struct ifmediareq *);
 310
 311 static uint8_t  bge_nvram_getbyte(struct bge_softc *, int, uint8_t *);
 312 static int      bge_read_nvram(struct bge_softc *, caddr_t, int, int);
 313
 314 static uint8_t  bge_eeprom_getbyte(struct bge_softc *, uint32_t, uint8_t *);
 315 static int      bge_read_eeprom(struct bge_softc *, caddr_t, uint32_t, size_t);
 316
 317 static void     bge_setmulti(struct bge_softc *);
 318 static void     bge_setpromisc(struct bge_softc *);
 319
 320 static int      bge_alloc_jumbo_mem(struct bge_softc *);
 321 static void     bge_free_jumbo_mem(struct bge_softc *);
 322 static struct bge_jslot
 323                 *bge_jalloc(struct bge_softc *);
 324 static void     bge_jfree(void *);
 325 static void     bge_jref(void *);
 326 static int      bge_newbuf_std(struct bge_softc *, int, int);
 327 static int      bge_newbuf_jumbo(struct bge_softc *, int, int);
 328 static void     bge_setup_rxdesc_std(struct bge_softc *, int);
 329 static void     bge_setup_rxdesc_jumbo(struct bge_softc *, int);
 330 static int      bge_init_rx_ring_std(struct bge_softc *);
 331 static void     bge_free_rx_ring_std(struct bge_softc *);
 332 static int      bge_init_rx_ring_jumbo(struct bge_softc *);
 333 static void     bge_free_rx_ring_jumbo(struct bge_softc *);
 334 static void     bge_free_tx_ring(struct bge_softc *);
 335 static int      bge_init_tx_ring(struct bge_softc *);
 336
 337 static int      bge_chipinit(struct bge_softc *);
 338 static int      bge_blockinit(struct bge_softc *);
 339
 340 static uint32_t bge_readmem_ind(struct bge_softc *, uint32_t);
 341 static void     bge_writemem_ind(struct bge_softc *, uint32_t, uint32_t);
 342 #ifdef notdef
 343 static uint32_t bge_readreg_ind(struct bge_softc *, uint32_t);
 344 #endif
 345 static void     bge_writereg_ind(struct bge_softc *, uint32_t, uint32_t);
 346 static void     bge_writemem_direct(struct bge_softc *, uint32_t, uint32_t);
 347 static void     bge_writembx(struct bge_softc *, int, int);
 348
 349 static int      bge_miibus_readreg(device_t, int, int);
 350 static int      bge_miibus_writereg(device_t, int, int, int);
 351 static void     bge_miibus_statchg(device_t);
 352 static void     bge_bcm5700_link_upd(struct bge_softc *, uint32_t);
 353 static void     bge_tbi_link_upd(struct bge_softc *, uint32_t);
 354 static void     bge_copper_link_upd(struct bge_softc *, uint32_t);
 355
 356 static void     bge_reset(struct bge_softc *);
 357
 358 static int      bge_dma_alloc(struct bge_softc *);
 359 static void     bge_dma_free(struct bge_softc *);
 360 static int      bge_dma_block_alloc(struct bge_softc *, bus_size_t,
 361                                     bus_dma_tag_t *, bus_dmamap_t *,
 362                                     void **, bus_addr_t *);
 363 static void     bge_dma_block_free(bus_dma_tag_t, bus_dmamap_t, void *);
 364
 365 static int      bge_get_eaddr_mem(struct bge_softc *, uint8_t[]);
 366 static int      bge_get_eaddr_nvram(struct bge_softc *, uint8_t[]);
 367 static int      bge_get_eaddr_eeprom(struct bge_softc *, uint8_t[]);
 368 static int      bge_get_eaddr(struct bge_softc *, uint8_t[]);
 369
 370 static void     bge_coal_change(struct bge_softc *);
 371 static int      bge_sysctl_rx_coal_ticks(SYSCTL_HANDLER_ARGS);
 372 static int      bge_sysctl_tx_coal_ticks(SYSCTL_HANDLER_ARGS);
 373 static int      bge_sysctl_rx_max_coal_bds(SYSCTL_HANDLER_ARGS);
 374 static int      bge_sysctl_tx_max_coal_bds(SYSCTL_HANDLER_ARGS);
 375 static int      bge_sysctl_coal_chg(SYSCTL_HANDLER_ARGS, uint32_t *, uint32_t);
 376
 377 /*
 378  * Set following tunable to 1 for some IBM blade servers with the DNLK
 379  * switch module. Auto negotiation is broken for those configurations.
 380  */
 381 static int      bge_fake_autoneg = 0;
 382 TUNABLE_INT("hw.bge.fake_autoneg", &bge_fake_autoneg);
 383
 384 /* Interrupt moderation control variables. */
 385 static int      bge_rx_coal_ticks = 100;        /* usec */
 386 static int      bge_tx_coal_ticks = 1023;       /* usec */
 387 static int      bge_rx_max_coal_bds = 80;
 388 static int      bge_tx_max_coal_bds = 128;
 389
 390 TUNABLE_INT("hw.bge.rx_coal_ticks", &bge_rx_coal_ticks);
 391 TUNABLE_INT("hw.bge.tx_coal_ticks", &bge_tx_coal_ticks);
 392 TUNABLE_INT("hw.bge.rx_max_coal_bds", &bge_rx_max_coal_bds);
 393 TUNABLE_INT("hw.bge.tx_max_coal_bds", &bge_tx_max_coal_bds);
 394
 395 #if !defined(KTR_IF_BGE)
 396 #define KTR_IF_BGE      KTR_ALL
 397 #endif
 398 KTR_INFO_MASTER(if_bge);
 399 KTR_INFO(KTR_IF_BGE, if_bge, intr, 0, "intr", 0);
 400 KTR_INFO(KTR_IF_BGE, if_bge, rx_pkt, 1, "rx_pkt", 0);
 401 KTR_INFO(KTR_IF_BGE, if_bge, tx_pkt, 2, "tx_pkt", 0);
 402 #define logif(name)     KTR_LOG(if_bge_ ## name)
 403
 404 static device_method_t bge_methods[] = {
 405         /* Device interface */
 406         DEVMETHOD(device_probe,         bge_probe),
 407         DEVMETHOD(device_attach,        bge_attach),
 408         DEVMETHOD(device_detach,        bge_detach),
 409         DEVMETHOD(device_shutdown,      bge_shutdown),
 410         DEVMETHOD(device_suspend,       bge_suspend),
 411         DEVMETHOD(device_resume,        bge_resume),
 412
 413         /* bus interface */
 414         DEVMETHOD(bus_print_child,      bus_generic_print_child),
 415         DEVMETHOD(bus_driver_added,     bus_generic_driver_added),
 416
 417         /* MII interface */
 418         DEVMETHOD(miibus_readreg,       bge_miibus_readreg),
 419         DEVMETHOD(miibus_writereg,      bge_miibus_writereg),
 420         DEVMETHOD(miibus_statchg,       bge_miibus_statchg),
 421
 422         { 0, 0 }
 423 };
 424
 425 static DEFINE_CLASS_0(bge, bge_driver, bge_methods, sizeof(struct bge_softc));
 426 static devclass_t bge_devclass;
 427
 428 DECLARE_DUMMY_MODULE(if_bge);
 429 DRIVER_MODULE(if_bge, pci, bge_driver, bge_devclass, NULL, NULL);
 430 DRIVER_MODULE(miibus, bge, miibus_driver, miibus_devclass, NULL, NULL);
 431
 432 static uint32_t
 433 bge_readmem_ind(struct bge_softc *sc, uint32_t off)
 434 {
 435         device_t dev = sc->bge_dev;
 436         uint32_t val;
 437
 438         pci_write_config(dev, BGE_PCI_MEMWIN_BASEADDR, off, 4);
 439         val = pci_read_config(dev, BGE_PCI_MEMWIN_DATA, 4);
 440         pci_write_config(dev, BGE_PCI_MEMWIN_BASEADDR, 0, 4);
 441         return (val);
 442 }
 443
 444 static void
 445 bge_writemem_ind(struct bge_softc *sc, uint32_t off, uint32_t val)
 446 {
 447         device_t dev = sc->bge_dev;
 448
 449         pci_write_config(dev, BGE_PCI_MEMWIN_BASEADDR, off, 4);
 450         pci_write_config(dev, BGE_PCI_MEMWIN_DATA, val, 4);
 451         pci_write_config(dev, BGE_PCI_MEMWIN_BASEADDR, 0, 4);
 452 }
 453
 454 #ifdef notdef
 455 static uint32_t
 456 bge_readreg_ind(struct bge_softc *sc, uin32_t off)
 457 {
 458         device_t dev = sc->bge_dev;
 459
 460         pci_write_config(dev, BGE_PCI_REG_BASEADDR, off, 4);
 461         return(pci_read_config(dev, BGE_PCI_REG_DATA, 4));
 462 }
 463 #endif
 464
 465 static void
 466 bge_writereg_ind(struct bge_softc *sc, uint32_t off, uint32_t val)
 467 {
 468         device_t dev = sc->bge_dev;
 469
 470         pci_write_config(dev, BGE_PCI_REG_BASEADDR, off, 4);
 471         pci_write_config(dev, BGE_PCI_REG_DATA, val, 4);
 472 }
 473
 474 static void
 475 bge_writemem_direct(struct bge_softc *sc, uint32_t off, uint32_t val)
 476 {
 477         CSR_WRITE_4(sc, off, val);
 478 }
 479
 480 static void
 481 bge_writembx(struct bge_softc *sc, int off, int val)
 482 {
 483         if (sc->bge_asicrev == BGE_ASICREV_BCM5906)
 484                 off += BGE_LPMBX_IRQ0_HI - BGE_MBX_IRQ0_HI;
 485
 486         CSR_WRITE_4(sc, off, val);
 487 }
 488
 489 static uint8_t
 490 bge_nvram_getbyte(struct bge_softc *sc, int addr, uint8_t *dest)
 491 {
 492         uint32_t access, byte = 0;
 493         int i;
 494
 495         /* Lock. */
 496         CSR_WRITE_4(sc, BGE_NVRAM_SWARB, BGE_NVRAMSWARB_SET1);
 497         for (i = 0; i < 8000; i++) {
 498                 if (CSR_READ_4(sc, BGE_NVRAM_SWARB) & BGE_NVRAMSWARB_GNT1)
 499                         break;
 500                 DELAY(20);
 501         }
 502         if (i == 8000)
 503                 return (1);
 504
 505         /* Enable access. */
 506         access = CSR_READ_4(sc, BGE_NVRAM_ACCESS);
 507         CSR_WRITE_4(sc, BGE_NVRAM_ACCESS, access | BGE_NVRAMACC_ENABLE);
 508
 509         CSR_WRITE_4(sc, BGE_NVRAM_ADDR, addr & 0xfffffffc);
 510         CSR_WRITE_4(sc, BGE_NVRAM_CMD, BGE_NVRAM_READCMD);
 511         for (i = 0; i < BGE_TIMEOUT * 10; i++) {
 512                 DELAY(10);
 513                 if (CSR_READ_4(sc, BGE_NVRAM_CMD) & BGE_NVRAMCMD_DONE) {
 514                         DELAY(10);
 515                         break;
 516                 }
 517         }
 518
 519         if (i == BGE_TIMEOUT * 10) {
 520                 if_printf(&sc->arpcom.ac_if, "nvram read timed out\n");
 521                 return (1);
 522         }
 523
 524         /* Get result. */
 525         byte = CSR_READ_4(sc, BGE_NVRAM_RDDATA);
 526
 527         *dest = (bswap32(byte) >> ((addr % 4) * 8)) & 0xFF;
 528
 529         /* Disable access. */
 530         CSR_WRITE_4(sc, BGE_NVRAM_ACCESS, access);
 531
 532         /* Unlock. */
 533         CSR_WRITE_4(sc, BGE_NVRAM_SWARB, BGE_NVRAMSWARB_CLR1);
 534         CSR_READ_4(sc, BGE_NVRAM_SWARB);
 535
 536         return (0);
 537 }
 538
 539 /*
 540  * Read a sequence of bytes from NVRAM.
 541  */
 542 static int
 543 bge_read_nvram(struct bge_softc *sc, caddr_t dest, int off, int cnt)
 544 {
 545         int err = 0, i;
 546         uint8_t byte = 0;
 547
 548         if (sc->bge_asicrev != BGE_ASICREV_BCM5906)
 549                 return (1);
 550
 551         for (i = 0; i < cnt; i++) {
 552                 err = bge_nvram_getbyte(sc, off + i, &byte);
 553                 if (err)
 554                         break;
 555                 *(dest + i) = byte;
 556         }
 557
 558         return (err ? 1 : 0);
 559 }
 560
 561 /*
 562  * Read a byte of data stored in the EEPROM at address 'addr.' The
 563  * BCM570x supports both the traditional bitbang interface and an
 564  * auto access interface for reading the EEPROM. We use the auto
 565  * access method.
 566  */
 567 static uint8_t
 568 bge_eeprom_getbyte(struct bge_softc *sc, uint32_t addr, uint8_t *dest)
 569 {
 570         int i;
 571         uint32_t byte = 0;
 572
 573         /*
 574          * Enable use of auto EEPROM access so we can avoid
 575          * having to use the bitbang method.
 576          */
 577         BGE_SETBIT(sc, BGE_MISC_LOCAL_CTL, BGE_MLC_AUTO_EEPROM);
 578
 579         /* Reset the EEPROM, load the clock period. */
 580         CSR_WRITE_4(sc, BGE_EE_ADDR,
 581             BGE_EEADDR_RESET|BGE_EEHALFCLK(BGE_HALFCLK_384SCL));
 582         DELAY(20);
 583
 584         /* Issue the read EEPROM command. */
 585         CSR_WRITE_4(sc, BGE_EE_ADDR, BGE_EE_READCMD | addr);
 586
 587         /* Wait for completion */
 588         for(i = 0; i < BGE_TIMEOUT * 10; i++) {
 589                 DELAY(10);
 590                 if (CSR_READ_4(sc, BGE_EE_ADDR) & BGE_EEADDR_DONE)
 591                         break;
 592         }
 593
 594         if (i == BGE_TIMEOUT) {
 595                 if_printf(&sc->arpcom.ac_if, "eeprom read timed out\n");
 596                 return(1);
 597         }
 598
 599         /* Get result. */
 600         byte = CSR_READ_4(sc, BGE_EE_DATA);
 601
 602         *dest = (byte >> ((addr % 4) * 8)) & 0xFF;
 603
 604         return(0);
 605 }
 606
 607 /*
 608  * Read a sequence of bytes from the EEPROM.
 609  */
 610 static int
 611 bge_read_eeprom(struct bge_softc *sc, caddr_t dest, uint32_t off, size_t len)
 612 {
 613         size_t i;
 614         int err;
 615         uint8_t byte;
 616
 617         for (byte = 0, err = 0, i = 0; i < len; i++) {
 618                 err = bge_eeprom_getbyte(sc, off + i, &byte);
 619                 if (err)
 620                         break;
 621                 *(dest + i) = byte;
 622         }
 623
 624         return(err ? 1 : 0);
 625 }
 626
 627 static int
 628 bge_miibus_readreg(device_t dev, int phy, int reg)
 629 {
 630         struct bge_softc *sc = device_get_softc(dev);
 631         struct ifnet *ifp = &sc->arpcom.ac_if;
 632         uint32_t val, autopoll;
 633         int i;
 634
 635         /*
 636          * Broadcom's own driver always assumes the internal
 637          * PHY is at GMII address 1. On some chips, the PHY responds
 638          * to accesses at all addresses, which could cause us to
 639          * bogusly attach the PHY 32 times at probe type. Always
 640          * restricting the lookup to address 1 is simpler than
 641          * trying to figure out which chips revisions should be
 642          * special-cased.
 643          */
 644         if (phy != 1)
 645                 return(0);
 646
 647         /* Reading with autopolling on may trigger PCI errors */
 648         autopoll = CSR_READ_4(sc, BGE_MI_MODE);
 649         if (autopoll & BGE_MIMODE_AUTOPOLL) {
 650                 BGE_CLRBIT(sc, BGE_MI_MODE, BGE_MIMODE_AUTOPOLL);
 651                 DELAY(40);
 652         }
 653
 654         CSR_WRITE_4(sc, BGE_MI_COMM, BGE_MICMD_READ|BGE_MICOMM_BUSY|
 655             BGE_MIPHY(phy)|BGE_MIREG(reg));
 656
 657         for (i = 0; i < BGE_TIMEOUT; i++) {
 658                 DELAY(10);
 659                 val = CSR_READ_4(sc, BGE_MI_COMM);
 660                 if (!(val & BGE_MICOMM_BUSY))
 661                         break;
 662         }
 663
 664         if (i == BGE_TIMEOUT) {
 665                 if_printf(ifp, "PHY read timed out "
 666                           "(phy %d, reg %d, val 0x%08x)\n", phy, reg, val);
 667                 val = 0;
 668                 goto done;
 669         }
 670
 671         DELAY(5);
 672         val = CSR_READ_4(sc, BGE_MI_COMM);
 673
 674 done:
 675         if (autopoll & BGE_MIMODE_AUTOPOLL) {
 676                 BGE_SETBIT(sc, BGE_MI_MODE, BGE_MIMODE_AUTOPOLL);
 677                 DELAY(40);
 678         }
 679
 680         if (val & BGE_MICOMM_READFAIL)
 681                 return(0);
 682
 683         return(val & 0xFFFF);
 684 }
 685
 686 static int
 687 bge_miibus_writereg(device_t dev, int phy, int reg, int val)
 688 {
 689         struct bge_softc *sc = device_get_softc(dev);
 690         uint32_t autopoll;
 691         int i;
 692
 693         /*
 694          * See the related comment in bge_miibus_readreg()
 695          */
 696         if (phy != 1)
 697                 return(0);
 698
 699         if (sc->bge_asicrev == BGE_ASICREV_BCM5906 &&
 700             (reg == BRGPHY_MII_1000CTL || reg == BRGPHY_MII_AUXCTL))
 701                return(0);
 702
 703         /* Reading with autopolling on may trigger PCI errors */
 704         autopoll = CSR_READ_4(sc, BGE_MI_MODE);
 705         if (autopoll & BGE_MIMODE_AUTOPOLL) {
 706                 BGE_CLRBIT(sc, BGE_MI_MODE, BGE_MIMODE_AUTOPOLL);
 707                 DELAY(40);
 708         }
 709
 710         CSR_WRITE_4(sc, BGE_MI_COMM, BGE_MICMD_WRITE|BGE_MICOMM_BUSY|
 711             BGE_MIPHY(phy)|BGE_MIREG(reg)|val);
 712
 713         for (i = 0; i < BGE_TIMEOUT; i++) {
 714                 DELAY(10);
 715                 if (!(CSR_READ_4(sc, BGE_MI_COMM) & BGE_MICOMM_BUSY)) {
 716                         DELAY(5);
 717                         CSR_READ_4(sc, BGE_MI_COMM); /* dummy read */
 718                         break;
 719                 }
 720         }
 721
 722         if (autopoll & BGE_MIMODE_AUTOPOLL) {
 723                 BGE_SETBIT(sc, BGE_MI_MODE, BGE_MIMODE_AUTOPOLL);
 724                 DELAY(40);
 725         }
 726
 727         if (i == BGE_TIMEOUT) {
 728                 if_printf(&sc->arpcom.ac_if, "PHY write timed out "
 729                           "(phy %d, reg %d, val %d)\n", phy, reg, val);
 730                 return(0);
 731         }
 732
 733         return(0);
 734 }
 735
 736 static void
 737 bge_miibus_statchg(device_t dev)
 738 {
 739         struct bge_softc *sc;
 740         struct mii_data *mii;
 741
 742         sc = device_get_softc(dev);
 743         mii = device_get_softc(sc->bge_miibus);
 744
 745         BGE_CLRBIT(sc, BGE_MAC_MODE, BGE_MACMODE_PORTMODE);
 746         if (IFM_SUBTYPE(mii->mii_media_active) == IFM_1000_T) {
 747                 BGE_SETBIT(sc, BGE_MAC_MODE, BGE_PORTMODE_GMII);
 748         } else {
 749                 BGE_SETBIT(sc, BGE_MAC_MODE, BGE_PORTMODE_MII);
 750         }
 751
 752         if ((mii->mii_media_active & IFM_GMASK) == IFM_FDX) {
 753                 BGE_CLRBIT(sc, BGE_MAC_MODE, BGE_MACMODE_HALF_DUPLEX);
 754         } else {
 755                 BGE_SETBIT(sc, BGE_MAC_MODE, BGE_MACMODE_HALF_DUPLEX);
 756         }
 757 }
 758
 759 /*
 760  * Memory management for jumbo frames.
 761  */
 762 static int
 763 bge_alloc_jumbo_mem(struct bge_softc *sc)
 764 {
 765         struct ifnet *ifp = &sc->arpcom.ac_if;
 766         struct bge_jslot *entry;
 767         uint8_t *ptr;
 768         bus_addr_t paddr;
 769         int i, error;
 770
 771         /*
 772          * Create tag for jumbo mbufs.
 773          * This is really a bit of a kludge. We allocate a special
 774          * jumbo buffer pool which (thanks to the way our DMA
 775          * memory allocation works) will consist of contiguous
 776          * pages. This means that even though a jumbo buffer might
 777          * be larger than a page size, we don't really need to
 778          * map it into more than one DMA segment. However, the
 779          * default mbuf tag will result in multi-segment mappings,
 780          * so we have to create a special jumbo mbuf tag that
 781          * lets us get away with mapping the jumbo buffers as
 782          * a single segment. I think eventually the driver should
 783          * be changed so that it uses ordinary mbufs and cluster
 784          * buffers, i.e. jumbo frames can span multiple DMA
 785          * descriptors. But that's a project for another day.
 786          */
 787
 788         /*
 789          * Create DMA stuffs for jumbo RX ring.
 790          */
 791         error = bge_dma_block_alloc(sc, BGE_JUMBO_RX_RING_SZ,
 792                                     &sc->bge_cdata.bge_rx_jumbo_ring_tag,
 793                                     &sc->bge_cdata.bge_rx_jumbo_ring_map,
 794                                     (void *)&sc->bge_ldata.bge_rx_jumbo_ring,
 795                                     &sc->bge_ldata.bge_rx_jumbo_ring_paddr);
 796         if (error) {
 797                 if_printf(ifp, "could not create jumbo RX ring\n");
 798                 return error;
 799         }
 800
 801         /*
 802          * Create DMA stuffs for jumbo buffer block.
 803          */
 804         error = bge_dma_block_alloc(sc, BGE_JMEM,
 805                                     &sc->bge_cdata.bge_jumbo_tag,
 806                                     &sc->bge_cdata.bge_jumbo_map,
 807                                     (void **)&sc->bge_ldata.bge_jumbo_buf,
 808                                     &paddr);
 809         if (error) {
 810                 if_printf(ifp, "could not create jumbo buffer\n");
 811                 return error;
 812         }
 813
 814         SLIST_INIT(&sc->bge_jfree_listhead);
 815
 816         /*
 817          * Now divide it up into 9K pieces and save the addresses
 818          * in an array. Note that we play an evil trick here by using
 819          * the first few bytes in the buffer to hold the the address
 820          * of the softc structure for this interface. This is because
 821          * bge_jfree() needs it, but it is called by the mbuf management
 822          * code which will not pass it to us explicitly.
 823          */
 824         for (i = 0, ptr = sc->bge_ldata.bge_jumbo_buf; i < BGE_JSLOTS; i++) {
 825                 entry = &sc->bge_cdata.bge_jslots[i];
 826                 entry->bge_sc = sc;
 827                 entry->bge_buf = ptr;
 828                 entry->bge_paddr = paddr;
 829                 entry->bge_inuse = 0;
 830                 entry->bge_slot = i;
 831                 SLIST_INSERT_HEAD(&sc->bge_jfree_listhead, entry, jslot_link);
 832
 833                 ptr += BGE_JLEN;
 834                 paddr += BGE_JLEN;
 835         }
 836         return 0;
 837 }
 838
 839 static void
 840 bge_free_jumbo_mem(struct bge_softc *sc)
 841 {
 842         /* Destroy jumbo RX ring. */
 843         bge_dma_block_free(sc->bge_cdata.bge_rx_jumbo_ring_tag,
 844                            sc->bge_cdata.bge_rx_jumbo_ring_map,
 845                            sc->bge_ldata.bge_rx_jumbo_ring);
 846
 847         /* Destroy jumbo buffer block. */
 848         bge_dma_block_free(sc->bge_cdata.bge_jumbo_tag,
 849                            sc->bge_cdata.bge_jumbo_map,
 850                            sc->bge_ldata.bge_jumbo_buf);
 851 }
 852
 853 /*
 854  * Allocate a jumbo buffer.
 855  */
 856 static struct bge_jslot *
 857 bge_jalloc(struct bge_softc *sc)
 858 {
 859         struct bge_jslot *entry;
 860
 861         lwkt_serialize_enter(&sc->bge_jslot_serializer);
 862         entry = SLIST_FIRST(&sc->bge_jfree_listhead);
 863         if (entry) {
 864                 SLIST_REMOVE_HEAD(&sc->bge_jfree_listhead, jslot_link);
 865                 entry->bge_inuse = 1;
 866         } else {
 867                 if_printf(&sc->arpcom.ac_if, "no free jumbo buffers\n");
 868         }
 869         lwkt_serialize_exit(&sc->bge_jslot_serializer);
 870         return(entry);
 871 }
 872
 873 /*
 874  * Adjust usage count on a jumbo buffer.
 875  */
 876 static void
 877 bge_jref(void *arg)
 878 {
 879         struct bge_jslot *entry = (struct bge_jslot *)arg;
 880         struct bge_softc *sc = entry->bge_sc;
 881
 882         if (sc == NULL)
 883                 panic("bge_jref: can't find softc pointer!");
 884
 885         if (&sc->bge_cdata.bge_jslots[entry->bge_slot] != entry) {
 886                 panic("bge_jref: asked to reference buffer "
 887                     "that we don't manage!");
 888         } else if (entry->bge_inuse == 0) {
 889                 panic("bge_jref: buffer already free!");
 890         } else {
 891                 atomic_add_int(&entry->bge_inuse, 1);
 892         }
 893 }
 894
 895 /*
 896  * Release a jumbo buffer.
 897  */
 898 static void
 899 bge_jfree(void *arg)
 900 {
 901         struct bge_jslot *entry = (struct bge_jslot *)arg;
 902         struct bge_softc *sc = entry->bge_sc;
 903
 904         if (sc == NULL)
 905                 panic("bge_jfree: can't find softc pointer!");
 906
 907         if (&sc->bge_cdata.bge_jslots[entry->bge_slot] != entry) {
 908                 panic("bge_jfree: asked to free buffer that we don't manage!");
 909         } else if (entry->bge_inuse == 0) {
 910                 panic("bge_jfree: buffer already free!");
 911         } else {
 912                 /*
 913                  * Possible MP race to 0, use the serializer.  The atomic insn
 914                  * is still needed for races against bge_jref().
 915                  */
 916                 lwkt_serialize_enter(&sc->bge_jslot_serializer);
 917                 atomic_subtract_int(&entry->bge_inuse, 1);
 918                 if (entry->bge_inuse == 0) {
 919                         SLIST_INSERT_HEAD(&sc->bge_jfree_listhead,
 920                                           entry, jslot_link);
 921                 }
 922                 lwkt_serialize_exit(&sc->bge_jslot_serializer);
 923         }
 924 }
 925
 926
 927 /*
 928  * Intialize a standard receive ring descriptor.
 929  */
 930 static int
 931 bge_newbuf_std(struct bge_softc *sc, int i, int init)
 932 {
 933         struct mbuf *m_new = NULL;
 934         bus_dma_segment_t seg;
 935         bus_dmamap_t map;
 936         int error, nsegs;
 937
 938         m_new = m_getcl(init ? MB_WAIT : MB_DONTWAIT, MT_DATA, M_PKTHDR);
 939         if (m_new == NULL)
 940                 return ENOBUFS;
 941         m_new->m_len = m_new->m_pkthdr.len = MCLBYTES;
 942
 943         if ((sc->bge_flags & BGE_FLAG_RX_ALIGNBUG) == 0)
 944                 m_adj(m_new, ETHER_ALIGN);
 945
 946         error = bus_dmamap_load_mbuf_segment(sc->bge_cdata.bge_rx_mtag,
 947                         sc->bge_cdata.bge_rx_tmpmap, m_new,
 948                         &seg, 1, &nsegs, BUS_DMA_NOWAIT);
 949         if (error) {
 950                 m_freem(m_new);
 951                 return error;
 952         }
 953
 954         if (!init) {
 955                 bus_dmamap_sync(sc->bge_cdata.bge_rx_mtag,
 956                                 sc->bge_cdata.bge_rx_std_dmamap[i],
 957                                 BUS_DMASYNC_POSTREAD);
 958                 bus_dmamap_unload(sc->bge_cdata.bge_rx_mtag,
 959                         sc->bge_cdata.bge_rx_std_dmamap[i]);
 960         }
 961
 962         map = sc->bge_cdata.bge_rx_tmpmap;
 963         sc->bge_cdata.bge_rx_tmpmap = sc->bge_cdata.bge_rx_std_dmamap[i];
 964         sc->bge_cdata.bge_rx_std_dmamap[i] = map;
 965
 966         sc->bge_cdata.bge_rx_std_chain[i].bge_mbuf = m_new;
 967         sc->bge_cdata.bge_rx_std_chain[i].bge_paddr = seg.ds_addr;
 968
 969         bge_setup_rxdesc_std(sc, i);
 970         return 0;
 971 }
 972
 973 static void
 974 bge_setup_rxdesc_std(struct bge_softc *sc, int i)
 975 {
 976         struct bge_rxchain *rc;
 977         struct bge_rx_bd *r;
 978
 979         rc = &sc->bge_cdata.bge_rx_std_chain[i];
 980         r = &sc->bge_ldata.bge_rx_std_ring[i];
 981
 982         r->bge_addr.bge_addr_lo = BGE_ADDR_LO(rc->bge_paddr);
 983         r->bge_addr.bge_addr_hi = BGE_ADDR_HI(rc->bge_paddr);
 984         r->bge_len = rc->bge_mbuf->m_len;
 985         r->bge_idx = i;
 986         r->bge_flags = BGE_RXBDFLAG_END;
 987 }
 988
 989 /*
 990  * Initialize a jumbo receive ring descriptor. This allocates
 991  * a jumbo buffer from the pool managed internally by the driver.
 992  */
 993 static int
 994 bge_newbuf_jumbo(struct bge_softc *sc, int i, int init)
 995 {
 996         struct mbuf *m_new = NULL;
 997         struct bge_jslot *buf;
 998         bus_addr_t paddr;
 999
1000         /* Allocate the mbuf. */
1001         MGETHDR(m_new, init ? MB_WAIT : MB_DONTWAIT, MT_DATA);
1002         if (m_new == NULL)
1003                 return ENOBUFS;
1004
1005         /* Allocate the jumbo buffer */
1006         buf = bge_jalloc(sc);
1007         if (buf == NULL) {
1008                 m_freem(m_new);
1009                 return ENOBUFS;
1010         }
1011
1012         /* Attach the buffer to the mbuf. */
1013         m_new->m_ext.ext_arg = buf;
1014         m_new->m_ext.ext_buf = buf->bge_buf;
1015         m_new->m_ext.ext_free = bge_jfree;
1016         m_new->m_ext.ext_ref = bge_jref;
1017         m_new->m_ext.ext_size = BGE_JUMBO_FRAMELEN;
1018
1019         m_new->m_flags |= M_EXT;
1020
1021         m_new->m_data = m_new->m_ext.ext_buf;
1022         m_new->m_len = m_new->m_pkthdr.len = m_new->m_ext.ext_size;
1023
1024         paddr = buf->bge_paddr;
1025         if ((sc->bge_flags & BGE_FLAG_RX_ALIGNBUG) == 0) {
1026                 m_adj(m_new, ETHER_ALIGN);
1027                 paddr += ETHER_ALIGN;
1028         }
1029
1030         /* Save necessary information */
1031         sc->bge_cdata.bge_rx_jumbo_chain[i].bge_mbuf = m_new;
1032         sc->bge_cdata.bge_rx_jumbo_chain[i].bge_paddr = paddr;
1033
1034         /* Set up the descriptor. */
1035         bge_setup_rxdesc_jumbo(sc, i);
1036         return 0;
1037 }
1038
1039 static void
1040 bge_setup_rxdesc_jumbo(struct bge_softc *sc, int i)
1041 {
1042         struct bge_rx_bd *r;
1043         struct bge_rxchain *rc;
1044
1045         r = &sc->bge_ldata.bge_rx_jumbo_ring[i];
1046         rc = &sc->bge_cdata.bge_rx_jumbo_chain[i];
1047
1048         r->bge_addr.bge_addr_lo = BGE_ADDR_LO(rc->bge_paddr);
1049         r->bge_addr.bge_addr_hi = BGE_ADDR_HI(rc->bge_paddr);
1050         r->bge_len = rc->bge_mbuf->m_len;
1051         r->bge_idx = i;
1052         r->bge_flags = BGE_RXBDFLAG_END|BGE_RXBDFLAG_JUMBO_RING;
1053 }
1054
1055 static int
1056 bge_init_rx_ring_std(struct bge_softc *sc)
1057 {
1058         int i, error;
1059
1060         for (i = 0; i < BGE_STD_RX_RING_CNT; i++) {
1061                 error = bge_newbuf_std(sc, i, 1);
1062                 if (error)
1063                         return error;
1064         };
1065
1066         sc->bge_std = BGE_STD_RX_RING_CNT - 1;
1067         bge_writembx(sc, BGE_MBX_RX_STD_PROD_LO, sc->bge_std);
1068
1069         return(0);
1070 }
1071
1072 static void
1073 bge_free_rx_ring_std(struct bge_softc *sc)
1074 {
1075         int i;
1076
1077         for (i = 0; i < BGE_STD_RX_RING_CNT; i++) {
1078                 struct bge_rxchain *rc = &sc->bge_cdata.bge_rx_std_chain[i];
1079
1080                 if (rc->bge_mbuf != NULL) {
1081                         bus_dmamap_unload(sc->bge_cdata.bge_rx_mtag,
1082                                           sc->bge_cdata.bge_rx_std_dmamap[i]);
1083                         m_freem(rc->bge_mbuf);
1084                         rc->bge_mbuf = NULL;
1085                 }
1086                 bzero(&sc->bge_ldata.bge_rx_std_ring[i],
1087                     sizeof(struct bge_rx_bd));
1088         }
1089 }
1090
1091 static int
1092 bge_init_rx_ring_jumbo(struct bge_softc *sc)
1093 {
1094         struct bge_rcb *rcb;
1095         int i, error;
1096
1097         for (i = 0; i < BGE_JUMBO_RX_RING_CNT; i++) {
1098                 error = bge_newbuf_jumbo(sc, i, 1);
1099                 if (error)
1100                         return error;
1101         };
1102
1103         sc->bge_jumbo = BGE_JUMBO_RX_RING_CNT - 1;
1104
1105         rcb = &sc->bge_ldata.bge_info.bge_jumbo_rx_rcb;
1106         rcb->bge_maxlen_flags = BGE_RCB_MAXLEN_FLAGS(0, 0);
1107         CSR_WRITE_4(sc, BGE_RX_JUMBO_RCB_MAXLEN_FLAGS, rcb->bge_maxlen_flags);
1108
1109         bge_writembx(sc, BGE_MBX_RX_JUMBO_PROD_LO, sc->bge_jumbo);
1110
1111         return(0);
1112 }
1113
1114 static void
1115 bge_free_rx_ring_jumbo(struct bge_softc *sc)
1116 {
1117         int i;
1118
1119         for (i = 0; i < BGE_JUMBO_RX_RING_CNT; i++) {
1120                 struct bge_rxchain *rc = &sc->bge_cdata.bge_rx_jumbo_chain[i];
1121
1122                 if (rc->bge_mbuf != NULL) {
1123                         m_freem(rc->bge_mbuf);
1124                         rc->bge_mbuf = NULL;
1125                 }
1126                 bzero(&sc->bge_ldata.bge_rx_jumbo_ring[i],
1127                     sizeof(struct bge_rx_bd));
1128         }
1129 }
1130
1131 static void
1132 bge_free_tx_ring(struct bge_softc *sc)
1133 {
1134         int i;
1135
1136         for (i = 0; i < BGE_TX_RING_CNT; i++) {
1137                 if (sc->bge_cdata.bge_tx_chain[i] != NULL) {
1138                         bus_dmamap_unload(sc->bge_cdata.bge_tx_mtag,
1139                                           sc->bge_cdata.bge_tx_dmamap[i]);
1140                         m_freem(sc->bge_cdata.bge_tx_chain[i]);
1141                         sc->bge_cdata.bge_tx_chain[i] = NULL;
1142                 }
1143                 bzero(&sc->bge_ldata.bge_tx_ring[i],
1144                     sizeof(struct bge_tx_bd));
1145         }
1146 }
1147
1148 static int
1149 bge_init_tx_ring(struct bge_softc *sc)
1150 {
1151         sc->bge_txcnt = 0;
1152         sc->bge_tx_saved_considx = 0;
1153         sc->bge_tx_prodidx = 0;
1154
1155         /* Initialize transmit producer index for host-memory send ring. */
1156         bge_writembx(sc, BGE_MBX_TX_HOST_PROD0_LO, sc->bge_tx_prodidx);
1157
1158         /* 5700 b2 errata */
1159         if (sc->bge_chiprev == BGE_CHIPREV_5700_BX)
1160                 bge_writembx(sc, BGE_MBX_TX_HOST_PROD0_LO, sc->bge_tx_prodidx);
1161
1162         bge_writembx(sc, BGE_MBX_TX_NIC_PROD0_LO, 0);
1163         /* 5700 b2 errata */
1164         if (sc->bge_chiprev == BGE_CHIPREV_5700_BX)
1165                 bge_writembx(sc, BGE_MBX_TX_NIC_PROD0_LO, 0);
1166
1167         return(0);
1168 }
1169
1170 static void
1171 bge_setmulti(struct bge_softc *sc)
1172 {
1173         struct ifnet *ifp;
1174         struct ifmultiaddr *ifma;
1175         uint32_t hashes[4] = { 0, 0, 0, 0 };
1176         int h, i;
1177
1178         ifp = &sc->arpcom.ac_if;
1179
1180         if (ifp->if_flags & IFF_ALLMULTI || ifp->if_flags & IFF_PROMISC) {
1181                 for (i = 0; i < 4; i++)
1182                         CSR_WRITE_4(sc, BGE_MAR0 + (i * 4), 0xFFFFFFFF);
1183                 return;
1184         }
1185
1186         /* First, zot all the existing filters. */
1187         for (i = 0; i < 4; i++)
1188                 CSR_WRITE_4(sc, BGE_MAR0 + (i * 4), 0);
1189
1190         /* Now program new ones. */
1191         TAILQ_FOREACH(ifma, &ifp->if_multiaddrs, ifma_link) {
1192                 if (ifma->ifma_addr->sa_family != AF_LINK)
1193                         continue;
1194                 h = ether_crc32_le(
1195                     LLADDR((struct sockaddr_dl *)ifma->ifma_addr),
1196                     ETHER_ADDR_LEN) & 0x7f;
1197                 hashes[(h & 0x60) >> 5] |= 1 << (h & 0x1F);
1198         }
1199
1200         for (i = 0; i < 4; i++)
1201                 CSR_WRITE_4(sc, BGE_MAR0 + (i * 4), hashes[i]);
1202 }
1203
1204 /*
1205  * Do endian, PCI and DMA initialization. Also check the on-board ROM
1206  * self-test results.
1207  */
1208 static int
1209 bge_chipinit(struct bge_softc *sc)
1210 {
1211         int i;
1212         uint32_t dma_rw_ctl;
1213
1214         /* Set endian type before we access any non-PCI registers. */
1215         pci_write_config(sc->bge_dev, BGE_PCI_MISC_CTL, BGE_INIT, 4);
1216
1217         /* Clear the MAC control register */
1218         CSR_WRITE_4(sc, BGE_MAC_MODE, 0);
1219
1220         /*
1221          * Clear the MAC statistics block in the NIC's
1222          * internal memory.
1223          */
1224         for (i = BGE_STATS_BLOCK;
1225             i < BGE_STATS_BLOCK_END + 1; i += sizeof(uint32_t))
1226                 BGE_MEMWIN_WRITE(sc, i, 0);
1227
1228         for (i = BGE_STATUS_BLOCK;
1229             i < BGE_STATUS_BLOCK_END + 1; i += sizeof(uint32_t))
1230                 BGE_MEMWIN_WRITE(sc, i, 0);
1231
1232         /* Set up the PCI DMA control register. */
1233         if (sc->bge_flags & BGE_FLAG_PCIE) {
1234                 /* PCI Express */
1235                 dma_rw_ctl = BGE_PCI_READ_CMD|BGE_PCI_WRITE_CMD |
1236                     (0xf << BGE_PCIDMARWCTL_RD_WAT_SHIFT) |
1237                     (0x2 << BGE_PCIDMARWCTL_WR_WAT_SHIFT);
1238         } else if (sc->bge_flags & BGE_FLAG_PCIX) {
1239                 /* PCI-X bus */
1240                 if (BGE_IS_5714_FAMILY(sc)) {
1241                         dma_rw_ctl = BGE_PCI_READ_CMD|BGE_PCI_WRITE_CMD;
1242                         dma_rw_ctl &= ~BGE_PCIDMARWCTL_ONEDMA_ATONCE; /* XXX */
1243                         /* XXX magic values, Broadcom-supplied Linux driver */
1244                         if (sc->bge_asicrev == BGE_ASICREV_BCM5780) {
1245                                 dma_rw_ctl |= (1 << 20) | (1 << 18) |
1246                                     BGE_PCIDMARWCTL_ONEDMA_ATONCE;
1247                         } else {
1248                                 dma_rw_ctl |= (1 << 20) | (1 << 18) | (1 << 15);
1249                         }
1250                 } else if (sc->bge_asicrev == BGE_ASICREV_BCM5704) {
1251                         /*
1252                          * The 5704 uses a different encoding of read/write
1253                          * watermarks.
1254                          */
1255                         dma_rw_ctl = BGE_PCI_READ_CMD|BGE_PCI_WRITE_CMD |
1256                             (0x7 << BGE_PCIDMARWCTL_RD_WAT_SHIFT) |
1257                             (0x3 << BGE_PCIDMARWCTL_WR_WAT_SHIFT);
1258                 } else {
1259                         dma_rw_ctl = BGE_PCI_READ_CMD|BGE_PCI_WRITE_CMD |
1260                             (0x3 << BGE_PCIDMARWCTL_RD_WAT_SHIFT) |
1261                             (0x3 << BGE_PCIDMARWCTL_WR_WAT_SHIFT) |
1262                             (0x0F);
1263                 }
1264
1265                 /*
1266                  * 5703 and 5704 need ONEDMA_AT_ONCE as a workaround
1267                  * for hardware bugs.
1268                  */
1269                 if (sc->bge_asicrev == BGE_ASICREV_BCM5703 ||
1270                     sc->bge_asicrev == BGE_ASICREV_BCM5704) {
1271                         uint32_t tmp;
1272
1273                         tmp = CSR_READ_4(sc, BGE_PCI_CLKCTL) & 0x1f;
1274                         if (tmp == 0x6 || tmp == 0x7)
1275                                 dma_rw_ctl |= BGE_PCIDMARWCTL_ONEDMA_ATONCE;
1276                 }
1277         } else {
1278                 /* Conventional PCI bus */
1279                 dma_rw_ctl = BGE_PCI_READ_CMD|BGE_PCI_WRITE_CMD |
1280                     (0x7 << BGE_PCIDMARWCTL_RD_WAT_SHIFT) |
1281                     (0x7 << BGE_PCIDMARWCTL_WR_WAT_SHIFT) |
1282                     (0x0F);
1283         }
1284
1285         if (sc->bge_asicrev == BGE_ASICREV_BCM5703 ||
1286             sc->bge_asicrev == BGE_ASICREV_BCM5704 ||
1287             sc->bge_asicrev == BGE_ASICREV_BCM5705)
1288                 dma_rw_ctl &= ~BGE_PCIDMARWCTL_MINDMA;
1289         pci_write_config(sc->bge_dev, BGE_PCI_DMA_RW_CTL, dma_rw_ctl, 4);
1290
1291         /*
1292          * Set up general mode register.
1293          */
1294         CSR_WRITE_4(sc, BGE_MODE_CTL, BGE_DMA_SWAP_OPTIONS|
1295             BGE_MODECTL_MAC_ATTN_INTR|BGE_MODECTL_HOST_SEND_BDS|
1296             BGE_MODECTL_TX_NO_PHDR_CSUM);
1297
1298         /*
1299          * Disable memory write invalidate.  Apparently it is not supported
1300          * properly by these devices.
1301          */
1302         PCI_CLRBIT(sc->bge_dev, BGE_PCI_CMD, PCIM_CMD_MWIEN, 4);
1303
1304         /* Set the timer prescaler (always 66Mhz) */
1305         CSR_WRITE_4(sc, BGE_MISC_CFG, 65 << 1/*BGE_32BITTIME_66MHZ*/);
1306
1307         if (sc->bge_asicrev == BGE_ASICREV_BCM5906) {
1308                 DELAY(40);      /* XXX */
1309
1310                 /* Put PHY into ready state */
1311                 BGE_CLRBIT(sc, BGE_MISC_CFG, BGE_MISCCFG_EPHY_IDDQ);
1312                 CSR_READ_4(sc, BGE_MISC_CFG); /* Flush */
1313                 DELAY(40);
1314         }
1315
1316         return(0);
1317 }
1318
1319 static int
1320 bge_blockinit(struct bge_softc *sc)
1321 {
1322         struct bge_rcb *rcb;
1323         bus_size_t vrcb;
1324         bge_hostaddr taddr;
1325         uint32_t val;
1326         int i;
1327
1328         /*
1329          * Initialize the memory window pointer register so that
1330          * we can access the first 32K of internal NIC RAM. This will
1331          * allow us to set up the TX send ring RCBs and the RX return
1332          * ring RCBs, plus other things which live in NIC memory.
1333          */
1334         CSR_WRITE_4(sc, BGE_PCI_MEMWIN_BASEADDR, 0);
1335
1336         /* Note: the BCM5704 has a smaller mbuf space than other chips. */
1337
1338         if (!BGE_IS_5705_PLUS(sc)) {
1339                 /* Configure mbuf memory pool */
1340                 CSR_WRITE_4(sc, BGE_BMAN_MBUFPOOL_BASEADDR, BGE_BUFFPOOL_1);
1341                 if (sc->bge_asicrev == BGE_ASICREV_BCM5704)
1342                         CSR_WRITE_4(sc, BGE_BMAN_MBUFPOOL_LEN, 0x10000);
1343                 else
1344                         CSR_WRITE_4(sc, BGE_BMAN_MBUFPOOL_LEN, 0x18000);
1345
1346                 /* Configure DMA resource pool */
1347                 CSR_WRITE_4(sc, BGE_BMAN_DMA_DESCPOOL_BASEADDR,
1348                     BGE_DMA_DESCRIPTORS);
1349                 CSR_WRITE_4(sc, BGE_BMAN_DMA_DESCPOOL_LEN, 0x2000);
1350         }
1351
1352         /* Configure mbuf pool watermarks */
1353         if (!BGE_IS_5705_PLUS(sc)) {
1354                 CSR_WRITE_4(sc, BGE_BMAN_MBUFPOOL_READDMA_LOWAT, 0x50);
1355                 CSR_WRITE_4(sc, BGE_BMAN_MBUFPOOL_MACRX_LOWAT, 0x20);
1356                 CSR_WRITE_4(sc, BGE_BMAN_MBUFPOOL_HIWAT, 0x60);
1357         } else if (sc->bge_asicrev == BGE_ASICREV_BCM5906) {
1358                 CSR_WRITE_4(sc, BGE_BMAN_MBUFPOOL_READDMA_LOWAT, 0x0);
1359                 CSR_WRITE_4(sc, BGE_BMAN_MBUFPOOL_MACRX_LOWAT, 0x04);
1360                 CSR_WRITE_4(sc, BGE_BMAN_MBUFPOOL_HIWAT, 0x10);
1361         } else {
1362                 CSR_WRITE_4(sc, BGE_BMAN_MBUFPOOL_READDMA_LOWAT, 0x0);
1363                 CSR_WRITE_4(sc, BGE_BMAN_MBUFPOOL_MACRX_LOWAT, 0x10);
1364                 CSR_WRITE_4(sc, BGE_BMAN_MBUFPOOL_HIWAT, 0x60);
1365         }
1366
1367         /* Configure DMA resource watermarks */
1368         CSR_WRITE_4(sc, BGE_BMAN_DMA_DESCPOOL_LOWAT, 5);
1369         CSR_WRITE_4(sc, BGE_BMAN_DMA_DESCPOOL_HIWAT, 10);
1370
1371         /* Enable buffer manager */
1372         if (!BGE_IS_5705_PLUS(sc)) {
1373                 CSR_WRITE_4(sc, BGE_BMAN_MODE,
1374                     BGE_BMANMODE_ENABLE|BGE_BMANMODE_LOMBUF_ATTN);
1375
1376                 /* Poll for buffer manager start indication */
1377                 for (i = 0; i < BGE_TIMEOUT; i++) {
1378                         if (CSR_READ_4(sc, BGE_BMAN_MODE) & BGE_BMANMODE_ENABLE)
1379                                 break;
1380                         DELAY(10);
1381                 }
1382
1383                 if (i == BGE_TIMEOUT) {
1384                         if_printf(&sc->arpcom.ac_if,
1385                                   "buffer manager failed to start\n");
1386                         return(ENXIO);
1387                 }
1388         }
1389
1390         /* Enable flow-through queues */
1391         CSR_WRITE_4(sc, BGE_FTQ_RESET, 0xFFFFFFFF);
1392         CSR_WRITE_4(sc, BGE_FTQ_RESET, 0);
1393
1394         /* Wait until queue initialization is complete */
1395         for (i = 0; i < BGE_TIMEOUT; i++) {
1396                 if (CSR_READ_4(sc, BGE_FTQ_RESET) == 0)
1397                         break;
1398                 DELAY(10);
1399         }
1400
1401         if (i == BGE_TIMEOUT) {
1402                 if_printf(&sc->arpcom.ac_if,
1403                           "flow-through queue init failed\n");
1404                 return(ENXIO);
1405         }
1406
1407         /* Initialize the standard RX ring control block */
1408         rcb = &sc->bge_ldata.bge_info.bge_std_rx_rcb;
1409         rcb->bge_hostaddr.bge_addr_lo =
1410             BGE_ADDR_LO(sc->bge_ldata.bge_rx_std_ring_paddr);
1411         rcb->bge_hostaddr.bge_addr_hi =
1412             BGE_ADDR_HI(sc->bge_ldata.bge_rx_std_ring_paddr);
1413         if (BGE_IS_5705_PLUS(sc))
1414                 rcb->bge_maxlen_flags = BGE_RCB_MAXLEN_FLAGS(512, 0);
1415         else
1416                 rcb->bge_maxlen_flags =
1417                     BGE_RCB_MAXLEN_FLAGS(BGE_MAX_FRAMELEN, 0);
1418         rcb->bge_nicaddr = BGE_STD_RX_RINGS;
1419         CSR_WRITE_4(sc, BGE_RX_STD_RCB_HADDR_HI, rcb->bge_hostaddr.bge_addr_hi);
1420         CSR_WRITE_4(sc, BGE_RX_STD_RCB_HADDR_LO, rcb->bge_hostaddr.bge_addr_lo);
1421         CSR_WRITE_4(sc, BGE_RX_STD_RCB_MAXLEN_FLAGS, rcb->bge_maxlen_flags);
1422         CSR_WRITE_4(sc, BGE_RX_STD_RCB_NICADDR, rcb->bge_nicaddr);
1423
1424         /*
1425          * Initialize the jumbo RX ring control block
1426          * We set the 'ring disabled' bit in the flags
1427          * field until we're actually ready to start
1428          * using this ring (i.e. once we set the MTU
1429          * high enough to require it).
1430          */
1431         if (BGE_IS_JUMBO_CAPABLE(sc)) {
1432                 rcb = &sc->bge_ldata.bge_info.bge_jumbo_rx_rcb;
1433
1434                 rcb->bge_hostaddr.bge_addr_lo =
1435                     BGE_ADDR_LO(sc->bge_ldata.bge_rx_jumbo_ring_paddr);
1436                 rcb->bge_hostaddr.bge_addr_hi =
1437                     BGE_ADDR_HI(sc->bge_ldata.bge_rx_jumbo_ring_paddr);
1438                 rcb->bge_maxlen_flags =
1439                     BGE_RCB_MAXLEN_FLAGS(BGE_MAX_FRAMELEN,
1440                     BGE_RCB_FLAG_RING_DISABLED);
1441                 rcb->bge_nicaddr = BGE_JUMBO_RX_RINGS;
1442                 CSR_WRITE_4(sc, BGE_RX_JUMBO_RCB_HADDR_HI,
1443                     rcb->bge_hostaddr.bge_addr_hi);
1444                 CSR_WRITE_4(sc, BGE_RX_JUMBO_RCB_HADDR_LO,
1445                     rcb->bge_hostaddr.bge_addr_lo);
1446                 CSR_WRITE_4(sc, BGE_RX_JUMBO_RCB_MAXLEN_FLAGS,
1447                     rcb->bge_maxlen_flags);
1448                 CSR_WRITE_4(sc, BGE_RX_JUMBO_RCB_NICADDR, rcb->bge_nicaddr);
1449
1450                 /* Set up dummy disabled mini ring RCB */
1451                 rcb = &sc->bge_ldata.bge_info.bge_mini_rx_rcb;
1452                 rcb->bge_maxlen_flags =
1453                     BGE_RCB_MAXLEN_FLAGS(0, BGE_RCB_FLAG_RING_DISABLED);
1454                 CSR_WRITE_4(sc, BGE_RX_MINI_RCB_MAXLEN_FLAGS,
1455                     rcb->bge_maxlen_flags);
1456         }
1457
1458         /*
1459          * Set the BD ring replentish thresholds. The recommended
1460          * values are 1/8th the number of descriptors allocated to
1461          * each ring.
1462          */
1463         if (BGE_IS_5705_PLUS(sc))
1464                 val = 8;
1465         else
1466                 val = BGE_STD_RX_RING_CNT / 8;
1467         CSR_WRITE_4(sc, BGE_RBDI_STD_REPL_THRESH, val);
1468         CSR_WRITE_4(sc, BGE_RBDI_JUMBO_REPL_THRESH, BGE_JUMBO_RX_RING_CNT/8);
1469
1470         /*
1471          * Disable all unused send rings by setting the 'ring disabled'
1472          * bit in the flags field of all the TX send ring control blocks.
1473          * These are located in NIC memory.
1474          */
1475         vrcb = BGE_MEMWIN_START + BGE_SEND_RING_RCB;
1476         for (i = 0; i < BGE_TX_RINGS_EXTSSRAM_MAX; i++) {
1477                 RCB_WRITE_4(sc, vrcb, bge_maxlen_flags,
1478                     BGE_RCB_MAXLEN_FLAGS(0, BGE_RCB_FLAG_RING_DISABLED));
1479                 RCB_WRITE_4(sc, vrcb, bge_nicaddr, 0);
1480                 vrcb += sizeof(struct bge_rcb);
1481         }
1482
1483         /* Configure TX RCB 0 (we use only the first ring) */
1484         vrcb = BGE_MEMWIN_START + BGE_SEND_RING_RCB;
1485         BGE_HOSTADDR(taddr, sc->bge_ldata.bge_tx_ring_paddr);
1486         RCB_WRITE_4(sc, vrcb, bge_hostaddr.bge_addr_hi, taddr.bge_addr_hi);
1487         RCB_WRITE_4(sc, vrcb, bge_hostaddr.bge_addr_lo, taddr.bge_addr_lo);
1488         RCB_WRITE_4(sc, vrcb, bge_nicaddr,
1489             BGE_NIC_TXRING_ADDR(0, BGE_TX_RING_CNT));
1490         if (!BGE_IS_5705_PLUS(sc)) {
1491                 RCB_WRITE_4(sc, vrcb, bge_maxlen_flags,
1492                     BGE_RCB_MAXLEN_FLAGS(BGE_TX_RING_CNT, 0));
1493         }
1494
1495         /* Disable all unused RX return rings */
1496         vrcb = BGE_MEMWIN_START + BGE_RX_RETURN_RING_RCB;
1497         for (i = 0; i < BGE_RX_RINGS_MAX; i++) {
1498                 RCB_WRITE_4(sc, vrcb, bge_hostaddr.bge_addr_hi, 0);
1499                 RCB_WRITE_4(sc, vrcb, bge_hostaddr.bge_addr_lo, 0);
1500                 RCB_WRITE_4(sc, vrcb, bge_maxlen_flags,
1501                     BGE_RCB_MAXLEN_FLAGS(sc->bge_return_ring_cnt,
1502                     BGE_RCB_FLAG_RING_DISABLED));
1503                 RCB_WRITE_4(sc, vrcb, bge_nicaddr, 0);
1504                 bge_writembx(sc, BGE_MBX_RX_CONS0_LO +
1505                     (i * (sizeof(uint64_t))), 0);
1506                 vrcb += sizeof(struct bge_rcb);
1507         }
1508
1509         /* Initialize RX ring indexes */
1510         bge_writembx(sc, BGE_MBX_RX_STD_PROD_LO, 0);
1511         bge_writembx(sc, BGE_MBX_RX_JUMBO_PROD_LO, 0);
1512         bge_writembx(sc, BGE_MBX_RX_MINI_PROD_LO, 0);
1513
1514         /*
1515          * Set up RX return ring 0
1516          * Note that the NIC address for RX return rings is 0x00000000.
1517          * The return rings live entirely within the host, so the
1518          * nicaddr field in the RCB isn't used.
1519          */
1520         vrcb = BGE_MEMWIN_START + BGE_RX_RETURN_RING_RCB;
1521         BGE_HOSTADDR(taddr, sc->bge_ldata.bge_rx_return_ring_paddr);
1522         RCB_WRITE_4(sc, vrcb, bge_hostaddr.bge_addr_hi, taddr.bge_addr_hi);
1523         RCB_WRITE_4(sc, vrcb, bge_hostaddr.bge_addr_lo, taddr.bge_addr_lo);
1524         RCB_WRITE_4(sc, vrcb, bge_nicaddr, 0x00000000);
1525         RCB_WRITE_4(sc, vrcb, bge_maxlen_flags,
1526             BGE_RCB_MAXLEN_FLAGS(sc->bge_return_ring_cnt, 0));
1527
1528         /* Set random backoff seed for TX */
1529         CSR_WRITE_4(sc, BGE_TX_RANDOM_BACKOFF,
1530             sc->arpcom.ac_enaddr[0] + sc->arpcom.ac_enaddr[1] +
1531             sc->arpcom.ac_enaddr[2] + sc->arpcom.ac_enaddr[3] +
1532             sc->arpcom.ac_enaddr[4] + sc->arpcom.ac_enaddr[5] +
1533             BGE_TX_BACKOFF_SEED_MASK);
1534
1535         /* Set inter-packet gap */
1536         CSR_WRITE_4(sc, BGE_TX_LENGTHS, 0x2620);
1537
1538         /*
1539          * Specify which ring to use for packets that don't match
1540          * any RX rules.
1541          */
1542         CSR_WRITE_4(sc, BGE_RX_RULES_CFG, 0x08);
1543
1544         /*
1545          * Configure number of RX lists. One interrupt distribution
1546          * list, sixteen active lists, one bad frames class.
1547          */
1548         CSR_WRITE_4(sc, BGE_RXLP_CFG, 0x181);
1549
1550         /* Inialize RX list placement stats mask. */
1551         CSR_WRITE_4(sc, BGE_RXLP_STATS_ENABLE_MASK, 0x007FFFFF);
1552         CSR_WRITE_4(sc, BGE_RXLP_STATS_CTL, 0x1);
1553
1554         /* Disable host coalescing until we get it set up */
1555         CSR_WRITE_4(sc, BGE_HCC_MODE, 0x00000000);
1556
1557         /* Poll to make sure it's shut down. */
1558         for (i = 0; i < BGE_TIMEOUT; i++) {
1559                 if (!(CSR_READ_4(sc, BGE_HCC_MODE) & BGE_HCCMODE_ENABLE))
1560                         break;
1561                 DELAY(10);
1562         }
1563
1564         if (i == BGE_TIMEOUT) {
1565                 if_printf(&sc->arpcom.ac_if,
1566                           "host coalescing engine failed to idle\n");
1567                 return(ENXIO);
1568         }
1569
1570         /* Set up host coalescing defaults */
1571         CSR_WRITE_4(sc, BGE_HCC_RX_COAL_TICKS, sc->bge_rx_coal_ticks);
1572         CSR_WRITE_4(sc, BGE_HCC_TX_COAL_TICKS, sc->bge_tx_coal_ticks);
1573         CSR_WRITE_4(sc, BGE_HCC_RX_MAX_COAL_BDS, sc->bge_rx_max_coal_bds);
1574         CSR_WRITE_4(sc, BGE_HCC_TX_MAX_COAL_BDS, sc->bge_tx_max_coal_bds);
1575         if (!BGE_IS_5705_PLUS(sc)) {
1576                 CSR_WRITE_4(sc, BGE_HCC_RX_COAL_TICKS_INT, 0);
1577                 CSR_WRITE_4(sc, BGE_HCC_TX_COAL_TICKS_INT, 0);
1578         }
1579         CSR_WRITE_4(sc, BGE_HCC_RX_MAX_COAL_BDS_INT, 1);
1580         CSR_WRITE_4(sc, BGE_HCC_TX_MAX_COAL_BDS_INT, 1);
1581
1582         /* Set up address of statistics block */
1583         if (!BGE_IS_5705_PLUS(sc)) {
1584                 CSR_WRITE_4(sc, BGE_HCC_STATS_ADDR_HI,
1585                     BGE_ADDR_HI(sc->bge_ldata.bge_stats_paddr));
1586                 CSR_WRITE_4(sc, BGE_HCC_STATS_ADDR_LO,
1587                     BGE_ADDR_LO(sc->bge_ldata.bge_stats_paddr));
1588
1589                 CSR_WRITE_4(sc, BGE_HCC_STATS_BASEADDR, BGE_STATS_BLOCK);
1590                 CSR_WRITE_4(sc, BGE_HCC_STATUSBLK_BASEADDR, BGE_STATUS_BLOCK);
1591                 CSR_WRITE_4(sc, BGE_HCC_STATS_TICKS, sc->bge_stat_ticks);
1592         }
1593
1594         /* Set up address of status block */
1595         CSR_WRITE_4(sc, BGE_HCC_STATUSBLK_ADDR_HI,
1596             BGE_ADDR_HI(sc->bge_ldata.bge_status_block_paddr));
1597         CSR_WRITE_4(sc, BGE_HCC_STATUSBLK_ADDR_LO,
1598             BGE_ADDR_LO(sc->bge_ldata.bge_status_block_paddr));
1599         sc->bge_ldata.bge_status_block->bge_idx[0].bge_rx_prod_idx = 0;
1600         sc->bge_ldata.bge_status_block->bge_idx[0].bge_tx_cons_idx = 0;
1601
1602         /* Turn on host coalescing state machine */
1603         CSR_WRITE_4(sc, BGE_HCC_MODE, BGE_HCCMODE_ENABLE);
1604
1605         /* Turn on RX BD completion state machine and enable attentions */
1606         CSR_WRITE_4(sc, BGE_RBDC_MODE,
1607             BGE_RBDCMODE_ENABLE|BGE_RBDCMODE_ATTN);
1608
1609         /* Turn on RX list placement state machine */
1610         CSR_WRITE_4(sc, BGE_RXLP_MODE, BGE_RXLPMODE_ENABLE);
1611
1612         /* Turn on RX list selector state machine. */
1613         if (!BGE_IS_5705_PLUS(sc))
1614                 CSR_WRITE_4(sc, BGE_RXLS_MODE, BGE_RXLSMODE_ENABLE);
1615
1616         /* Turn on DMA, clear stats */
1617         CSR_WRITE_4(sc, BGE_MAC_MODE, BGE_MACMODE_TXDMA_ENB|
1618             BGE_MACMODE_RXDMA_ENB|BGE_MACMODE_RX_STATS_CLEAR|
1619             BGE_MACMODE_TX_STATS_CLEAR|BGE_MACMODE_RX_STATS_ENB|
1620             BGE_MACMODE_TX_STATS_ENB|BGE_MACMODE_FRMHDR_DMA_ENB|
1621             ((sc->bge_flags & BGE_FLAG_TBI) ?
1622              BGE_PORTMODE_TBI : BGE_PORTMODE_MII));
1623
1624         /* Set misc. local control, enable interrupts on attentions */
1625         CSR_WRITE_4(sc, BGE_MISC_LOCAL_CTL, BGE_MLC_INTR_ONATTN);
1626
1627 #ifdef notdef
1628         /* Assert GPIO pins for PHY reset */
1629         BGE_SETBIT(sc, BGE_MISC_LOCAL_CTL, BGE_MLC_MISCIO_OUT0|
1630             BGE_MLC_MISCIO_OUT1|BGE_MLC_MISCIO_OUT2);
1631         BGE_SETBIT(sc, BGE_MISC_LOCAL_CTL, BGE_MLC_MISCIO_OUTEN0|
1632             BGE_MLC_MISCIO_OUTEN1|BGE_MLC_MISCIO_OUTEN2);
1633 #endif
1634
1635         /* Turn on DMA completion state machine */
1636         if (!BGE_IS_5705_PLUS(sc))
1637                 CSR_WRITE_4(sc, BGE_DMAC_MODE, BGE_DMACMODE_ENABLE);
1638
1639         /* Turn on write DMA state machine */
1640         val = BGE_WDMAMODE_ENABLE|BGE_WDMAMODE_ALL_ATTNS;
1641         if (BGE_IS_5755_PLUS(sc))
1642                 val |= (1 << 29);       /* Enable host coalescing bug fix. */
1643         CSR_WRITE_4(sc, BGE_WDMA_MODE, val);
1644         DELAY(40);
1645
1646         /* Turn on read DMA state machine */
1647         val = BGE_RDMAMODE_ENABLE | BGE_RDMAMODE_ALL_ATTNS;
1648         if (sc->bge_asicrev == BGE_ASICREV_BCM5784 ||
1649             sc->bge_asicrev == BGE_ASICREV_BCM5785 ||
1650             sc->bge_asicrev == BGE_ASICREV_BCM57780)
1651                 val |= BGE_RDMAMODE_BD_SBD_CRPT_ATTN |
1652                   BGE_RDMAMODE_MBUF_RBD_CRPT_ATTN |
1653                   BGE_RDMAMODE_MBUF_SBD_CRPT_ATTN;
1654         if (sc->bge_flags & BGE_FLAG_PCIE)
1655                 val |= BGE_RDMAMODE_FIFO_LONG_BURST;
1656         CSR_WRITE_4(sc, BGE_RDMA_MODE, val);
1657         DELAY(40);
1658
1659         /* Turn on RX data completion state machine */
1660         CSR_WRITE_4(sc, BGE_RDC_MODE, BGE_RDCMODE_ENABLE);
1661
1662         /* Turn on RX BD initiator state machine */
1663         CSR_WRITE_4(sc, BGE_RBDI_MODE, BGE_RBDIMODE_ENABLE);
1664
1665         /* Turn on RX data and RX BD initiator state machine */
1666         CSR_WRITE_4(sc, BGE_RDBDI_MODE, BGE_RDBDIMODE_ENABLE);
1667
1668         /* Turn on Mbuf cluster free state machine */
1669         if (!BGE_IS_5705_PLUS(sc))
1670                 CSR_WRITE_4(sc, BGE_MBCF_MODE, BGE_MBCFMODE_ENABLE);
1671
1672         /* Turn on send BD completion state machine */
1673         CSR_WRITE_4(sc, BGE_SBDC_MODE, BGE_SBDCMODE_ENABLE);
1674
1675         /* Turn on send data completion state machine */
1676         val = BGE_SDCMODE_ENABLE;
1677         if (sc->bge_asicrev == BGE_ASICREV_BCM5761)
1678                 val |= BGE_SDCMODE_CDELAY;
1679         CSR_WRITE_4(sc, BGE_SDC_MODE, val);
1680
1681         /* Turn on send data initiator state machine */
1682         CSR_WRITE_4(sc, BGE_SDI_MODE, BGE_SDIMODE_ENABLE);
1683
1684         /* Turn on send BD initiator state machine */
1685         CSR_WRITE_4(sc, BGE_SBDI_MODE, BGE_SBDIMODE_ENABLE);
1686
1687         /* Turn on send BD selector state machine */
1688         CSR_WRITE_4(sc, BGE_SRS_MODE, BGE_SRSMODE_ENABLE);
1689
1690         CSR_WRITE_4(sc, BGE_SDI_STATS_ENABLE_MASK, 0x007FFFFF);
1691         CSR_WRITE_4(sc, BGE_SDI_STATS_CTL,
1692             BGE_SDISTATSCTL_ENABLE|BGE_SDISTATSCTL_FASTER);
1693
1694         /* ack/clear link change events */
1695         CSR_WRITE_4(sc, BGE_MAC_STS, BGE_MACSTAT_SYNC_CHANGED|
1696             BGE_MACSTAT_CFG_CHANGED|BGE_MACSTAT_MI_COMPLETE|
1697             BGE_MACSTAT_LINK_CHANGED);
1698         CSR_WRITE_4(sc, BGE_MI_STS, 0);
1699
1700         /* Enable PHY auto polling (for MII/GMII only) */
1701         if (sc->bge_flags & BGE_FLAG_TBI) {
1702                 CSR_WRITE_4(sc, BGE_MI_STS, BGE_MISTS_LINK);
1703         } else {
1704                 BGE_SETBIT(sc, BGE_MI_MODE, BGE_MIMODE_AUTOPOLL|10<<16);
1705                 if (sc->bge_asicrev == BGE_ASICREV_BCM5700 &&
1706                     sc->bge_chipid != BGE_CHIPID_BCM5700_B2) {
1707                         CSR_WRITE_4(sc, BGE_MAC_EVT_ENB,
1708                             BGE_EVTENB_MI_INTERRUPT);
1709                 }
1710         }
1711
1712         /*
1713          * Clear any pending link state attention.
1714          * Otherwise some link state change events may be lost until attention
1715          * is cleared by bge_intr() -> bge_softc.bge_link_upd() sequence.
1716          * It's not necessary on newer BCM chips - perhaps enabling link
1717          * state change attentions implies clearing pending attention.
1718          */
1719         CSR_WRITE_4(sc, BGE_MAC_STS, BGE_MACSTAT_SYNC_CHANGED|
1720             BGE_MACSTAT_CFG_CHANGED|BGE_MACSTAT_MI_COMPLETE|
1721             BGE_MACSTAT_LINK_CHANGED);
1722
1723         /* Enable link state change attentions. */
1724         BGE_SETBIT(sc, BGE_MAC_EVT_ENB, BGE_EVTENB_LINK_CHANGED);
1725
1726         return(0);
1727 }
1728
1729 /*
1730  * Probe for a Broadcom chip. Check the PCI vendor and device IDs
1731  * against our list and return its name if we find a match. Note
1732  * that since the Broadcom controller contains VPD support, we
1733  * can get the device name string from the controller itself instead
1734  * of the compiled-in string. This is a little slow, but it guarantees
1735  * we'll always announce the right product name.
1736  */
1737 static int
1738 bge_probe(device_t dev)
1739 {
1740         const struct bge_type *t;
1741         uint16_t product, vendor;
1742
1743         product = pci_get_device(dev);
1744         vendor = pci_get_vendor(dev);
1745
1746         for (t = bge_devs; t->bge_name != NULL; t++) {
1747                 if (vendor == t->bge_vid && product == t->bge_did)
1748                         break;
1749         }
1750         if (t->bge_name == NULL)
1751                 return(ENXIO);
1752
1753         device_set_desc(dev, t->bge_name);
1754         if (pci_get_subvendor(dev) == PCI_VENDOR_DELL) {
1755                 struct bge_softc *sc = device_get_softc(dev);
1756                 sc->bge_flags |= BGE_FLAG_NO_3LED;
1757         }
1758         return(0);
1759 }
1760
1761 static int
1762 bge_attach(device_t dev)
1763 {
1764         struct ifnet *ifp;
1765         struct bge_softc *sc;
1766         uint32_t hwcfg = 0;
1767         int error = 0, rid;
1768         uint8_t ether_addr[ETHER_ADDR_LEN];
1769
1770         sc = device_get_softc(dev);
1771         sc->bge_dev = dev;
1772         callout_init(&sc->bge_stat_timer);
1773         lwkt_serialize_init(&sc->bge_jslot_serializer);
1774
1775 #ifndef BURN_BRIDGES
1776         if (pci_get_powerstate(dev) != PCI_POWERSTATE_D0) {
1777                 uint32_t irq, mem;
1778
1779                 irq = pci_read_config(dev, PCIR_INTLINE, 4);
1780                 mem = pci_read_config(dev, BGE_PCI_BAR0, 4);
1781
1782                 device_printf(dev, "chip is in D%d power mode "
1783                     "-- setting to D0\n", pci_get_powerstate(dev));
1784
1785                 pci_set_powerstate(dev, PCI_POWERSTATE_D0);
1786
1787                 pci_write_config(dev, PCIR_INTLINE, irq, 4);
1788                 pci_write_config(dev, BGE_PCI_BAR0, mem, 4);
1789         }
1790 #endif  /* !BURN_BRIDGE */
1791
1792         /*
1793          * Map control/status registers.
1794          */
1795         pci_enable_busmaster(dev);
1796
1797         rid = BGE_PCI_BAR0;
1798         sc->bge_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid,
1799             RF_ACTIVE);
1800
1801         if (sc->bge_res == NULL) {
1802                 device_printf(dev, "couldn't map memory\n");
1803                 return ENXIO;
1804         }
1805
1806         sc->bge_btag = rman_get_bustag(sc->bge_res);
1807         sc->bge_bhandle = rman_get_bushandle(sc->bge_res);
1808
1809         /* Save various chip information */
1810         sc->bge_chipid =
1811             pci_read_config(dev, BGE_PCI_MISC_CTL, 4) >>
1812             BGE_PCIMISCCTL_ASICREV_SHIFT;
1813         if (BGE_ASICREV(sc->bge_chipid) == BGE_ASICREV_USE_PRODID_REG)
1814                 sc->bge_chipid = pci_read_config(dev, BGE_PCI_PRODID_ASICREV, 4);
1815         sc->bge_asicrev = BGE_ASICREV(sc->bge_chipid);
1816         sc->bge_chiprev = BGE_CHIPREV(sc->bge_chipid);
1817
1818         /* Save chipset family. */
1819         switch (sc->bge_asicrev) {
1820         case BGE_ASICREV_BCM5755:
1821         case BGE_ASICREV_BCM5761:
1822         case BGE_ASICREV_BCM5784:
1823         case BGE_ASICREV_BCM5785:
1824         case BGE_ASICREV_BCM5787:
1825         case BGE_ASICREV_BCM57780:
1826             sc->bge_flags |= BGE_FLAG_5755_PLUS | BGE_FLAG_575X_PLUS |
1827                 BGE_FLAG_5705_PLUS;
1828             break;
1829
1830         case BGE_ASICREV_BCM5700:
1831         case BGE_ASICREV_BCM5701:
1832         case BGE_ASICREV_BCM5703:
1833         case BGE_ASICREV_BCM5704:
1834                 sc->bge_flags |= BGE_FLAG_5700_FAMILY | BGE_FLAG_JUMBO;
1835                 break;
1836
1837         case BGE_ASICREV_BCM5714_A0:
1838         case BGE_ASICREV_BCM5780:
1839         case BGE_ASICREV_BCM5714:
1840                 sc->bge_flags |= BGE_FLAG_5714_FAMILY;
1841                 /* Fall through */
1842
1843         case BGE_ASICREV_BCM5750:
1844         case BGE_ASICREV_BCM5752:
1845         case BGE_ASICREV_BCM5906:
1846                 sc->bge_flags |= BGE_FLAG_575X_PLUS;
1847                 /* Fall through */
1848
1849         case BGE_ASICREV_BCM5705:
1850                 sc->bge_flags |= BGE_FLAG_5705_PLUS;
1851                 break;
1852         }
1853
1854         if (sc->bge_asicrev == BGE_ASICREV_BCM5906)
1855                 sc->bge_flags |= BGE_FLAG_NO_EEPROM;
1856
1857         /*
1858          * Set various quirk flags.
1859          */
1860
1861         sc->bge_flags |= BGE_FLAG_ETH_WIRESPEED;
1862         if (sc->bge_asicrev == BGE_ASICREV_BCM5700 ||
1863             (sc->bge_asicrev == BGE_ASICREV_BCM5705 &&
1864              (sc->bge_chipid != BGE_CHIPID_BCM5705_A0 &&
1865               sc->bge_chipid != BGE_CHIPID_BCM5705_A1)) ||
1866             sc->bge_asicrev == BGE_ASICREV_BCM5906)
1867                 sc->bge_flags &= ~BGE_FLAG_ETH_WIRESPEED;
1868
1869         if (sc->bge_chipid == BGE_CHIPID_BCM5701_A0 ||
1870             sc->bge_chipid == BGE_CHIPID_BCM5701_B0)
1871                 sc->bge_flags |= BGE_FLAG_CRC_BUG;
1872
1873         if (sc->bge_chiprev == BGE_CHIPREV_5703_AX ||
1874             sc->bge_chiprev == BGE_CHIPREV_5704_AX)
1875                 sc->bge_flags |= BGE_FLAG_ADC_BUG;
1876
1877         if (sc->bge_chipid == BGE_CHIPID_BCM5704_A0)
1878                 sc->bge_flags |= BGE_FLAG_5704_A0_BUG;
1879
1880         if (BGE_IS_5705_PLUS(sc) &&
1881                 !(sc->bge_flags & BGE_FLAG_ADJUST_TRIM)) {
1882                 if (sc->bge_asicrev == BGE_ASICREV_BCM5755 ||
1883                     sc->bge_asicrev == BGE_ASICREV_BCM5761 ||
1884                     sc->bge_asicrev == BGE_ASICREV_BCM5784 ||
1885                     sc->bge_asicrev == BGE_ASICREV_BCM5787) {
1886                         if (sc->bge_chipid != BGE_CHIPID_BCM5722_A0)
1887                             sc->bge_flags |= BGE_FLAG_JITTER_BUG;
1888                 } else if (sc->bge_asicrev != BGE_ASICREV_BCM5906) {
1889                         sc->bge_flags |= BGE_FLAG_BER_BUG;
1890                 }
1891         }
1892
1893         /* Allocate interrupt */
1894         rid = 0;
1895
1896         sc->bge_irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid,
1897             RF_SHAREABLE | RF_ACTIVE);
1898
1899         if (sc->bge_irq == NULL) {
1900                 device_printf(dev, "couldn't map interrupt\n");
1901                 error = ENXIO;
1902                 goto fail;
1903         }
1904
1905         /*
1906          * Check if this is a PCI-X or PCI Express device.
1907          */
1908         if (BGE_IS_5705_PLUS(sc)) {
1909                 if (pci_is_pcie(dev)) {
1910                         sc->bge_flags |= BGE_FLAG_PCIE;
1911                         pcie_set_max_readrq(dev, PCIEM_DEVCTL_MAX_READRQ_4096);
1912                 }
1913         } else {
1914                 /*
1915                  * Check if the device is in PCI-X Mode.
1916                  * (This bit is not valid on PCI Express controllers.)
1917                  */
1918                 if ((pci_read_config(sc->bge_dev, BGE_PCI_PCISTATE, 4) &
1919                     BGE_PCISTATE_PCI_BUSMODE) == 0)
1920                         sc->bge_flags |= BGE_FLAG_PCIX;
1921         }
1922
1923         device_printf(dev, "CHIP ID 0x%08x; "
1924                       "ASIC REV 0x%02x; CHIP REV 0x%02x; %s\n",
1925                       sc->bge_chipid, sc->bge_asicrev, sc->bge_chiprev,
1926                       (sc->bge_flags & BGE_FLAG_PCIX) ? "PCI-X"
1927                       : ((sc->bge_flags & BGE_FLAG_PCIE) ?
1928                         "PCI-E" : "PCI"));
1929
1930         ifp = &sc->arpcom.ac_if;
1931         if_initname(ifp, device_get_name(dev), device_get_unit(dev));
1932
1933         /* Try to reset the chip. */
1934         bge_reset(sc);
1935
1936         if (bge_chipinit(sc)) {
1937                 device_printf(dev, "chip initialization failed\n");
1938                 error = ENXIO;
1939                 goto fail;
1940         }
1941
1942         /*
1943          * Get station address
1944          */
1945         error = bge_get_eaddr(sc, ether_addr);
1946         if (error) {
1947                 device_printf(dev, "failed to read station address\n");
1948                 goto fail;
1949         }
1950
1951         /* 5705/5750 limits RX return ring to 512 entries. */
1952         if (BGE_IS_5705_PLUS(sc))
1953                 sc->bge_return_ring_cnt = BGE_RETURN_RING_CNT_5705;
1954         else
1955                 sc->bge_return_ring_cnt = BGE_RETURN_RING_CNT;
1956
1957         error = bge_dma_alloc(sc);
1958         if (error)
1959                 goto fail;
1960
1961         /* Set default tuneable values. */
1962         sc->bge_stat_ticks = BGE_TICKS_PER_SEC;
1963         sc->bge_rx_coal_ticks = bge_rx_coal_ticks;
1964         sc->bge_tx_coal_ticks = bge_tx_coal_ticks;
1965         sc->bge_rx_max_coal_bds = bge_rx_max_coal_bds;
1966         sc->bge_tx_max_coal_bds = bge_tx_max_coal_bds;
1967
1968         /* Set up ifnet structure */
1969         ifp->if_softc = sc;
1970         ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST;
1971         ifp->if_ioctl = bge_ioctl;
1972         ifp->if_start = bge_start;
1973 #ifdef DEVICE_POLLING
1974         ifp->if_poll = bge_poll;
1975 #endif
1976         ifp->if_watchdog = bge_watchdog;
1977         ifp->if_init = bge_init;
1978         ifp->if_mtu = ETHERMTU;
1979         ifp->if_capabilities = IFCAP_VLAN_HWTAGGING | IFCAP_VLAN_MTU;
1980         ifq_set_maxlen(&ifp->if_snd, BGE_TX_RING_CNT - 1);
1981         ifq_set_ready(&ifp->if_snd);
1982
1983         /*
1984          * 5700 B0 chips do not support checksumming correctly due
1985          * to hardware bugs.
1986          */
1987         if (sc->bge_chipid != BGE_CHIPID_BCM5700_B0) {
1988                 ifp->if_capabilities |= IFCAP_HWCSUM;
1989                 ifp->if_hwassist = BGE_CSUM_FEATURES;
1990         }
1991         ifp->if_capenable = ifp->if_capabilities;
1992
1993         /*
1994          * Figure out what sort of media we have by checking the
1995          * hardware config word in the first 32k of NIC internal memory,
1996          * or fall back to examining the EEPROM if necessary.
1997          * Note: on some BCM5700 cards, this value appears to be unset.
1998          * If that's the case, we have to rely on identifying the NIC
1999          * by its PCI subsystem ID, as we do below for the SysKonnect
2000          * SK-9D41.
2001          */
2002         if (bge_readmem_ind(sc, BGE_SOFTWARE_GENCOMM_SIG) == BGE_MAGIC_NUMBER)
2003                 hwcfg = bge_readmem_ind(sc, BGE_SOFTWARE_GENCOMM_NICCFG);
2004         else {
2005                 if (bge_read_eeprom(sc, (caddr_t)&hwcfg, BGE_EE_HWCFG_OFFSET,
2006                                     sizeof(hwcfg))) {
2007                         device_printf(dev, "failed to read EEPROM\n");
2008                         error = ENXIO;
2009                         goto fail;
2010                 }
2011                 hwcfg = ntohl(hwcfg);
2012         }
2013
2014         if ((hwcfg & BGE_HWCFG_MEDIA) == BGE_MEDIA_FIBER)
2015                 sc->bge_flags |= BGE_FLAG_TBI;
2016
2017         /* The SysKonnect SK-9D41 is a 1000baseSX card. */
2018         if (pci_get_subvendor(dev) == PCI_PRODUCT_SCHNEIDERKOCH_SK_9D41)
2019                 sc->bge_flags |= BGE_FLAG_TBI;
2020
2021         if (sc->bge_flags & BGE_FLAG_TBI) {
2022                 ifmedia_init(&sc->bge_ifmedia, IFM_IMASK,
2023                     bge_ifmedia_upd, bge_ifmedia_sts);
2024                 ifmedia_add(&sc->bge_ifmedia, IFM_ETHER|IFM_1000_SX, 0, NULL);
2025                 ifmedia_add(&sc->bge_ifmedia,
2026                     IFM_ETHER|IFM_1000_SX|IFM_FDX, 0, NULL);
2027                 ifmedia_add(&sc->bge_ifmedia, IFM_ETHER|IFM_AUTO, 0, NULL);
2028                 ifmedia_set(&sc->bge_ifmedia, IFM_ETHER|IFM_AUTO);
2029                 sc->bge_ifmedia.ifm_media = sc->bge_ifmedia.ifm_cur->ifm_media;
2030         } else {
2031                 /*
2032                  * Do transceiver setup.
2033                  */
2034                 if (mii_phy_probe(dev, &sc->bge_miibus,
2035                     bge_ifmedia_upd, bge_ifmedia_sts)) {
2036                         device_printf(dev, "MII without any PHY!\n");
2037                         error = ENXIO;
2038                         goto fail;
2039                 }
2040         }
2041
2042         /*
2043          * When using the BCM5701 in PCI-X mode, data corruption has
2044          * been observed in the first few bytes of some received packets.
2045          * Aligning the packet buffer in memory eliminates the corruption.
2046          * Unfortunately, this misaligns the packet payloads.  On platforms
2047          * which do not support unaligned accesses, we will realign the
2048          * payloads by copying the received packets.
2049          */
2050         if (sc->bge_asicrev == BGE_ASICREV_BCM5701 &&
2051             (sc->bge_flags & BGE_FLAG_PCIX))
2052                 sc->bge_flags |= BGE_FLAG_RX_ALIGNBUG;
2053
2054         if (sc->bge_asicrev == BGE_ASICREV_BCM5700 &&
2055             sc->bge_chipid != BGE_CHIPID_BCM5700_B2) {
2056                 sc->bge_link_upd = bge_bcm5700_link_upd;
2057                 sc->bge_link_chg = BGE_MACSTAT_MI_INTERRUPT;
2058         } else if (sc->bge_flags & BGE_FLAG_TBI) {
2059                 sc->bge_link_upd = bge_tbi_link_upd;
2060                 sc->bge_link_chg = BGE_MACSTAT_LINK_CHANGED;
2061         } else {
2062                 sc->bge_link_upd = bge_copper_link_upd;
2063                 sc->bge_link_chg = BGE_MACSTAT_LINK_CHANGED;
2064         }
2065
2066         /*
2067          * Create sysctl nodes.
2068          */
2069         sysctl_ctx_init(&sc->bge_sysctl_ctx);
2070         sc->bge_sysctl_tree = SYSCTL_ADD_NODE(&sc->bge_sysctl_ctx,
2071                                               SYSCTL_STATIC_CHILDREN(_hw),
2072                                               OID_AUTO,
2073                                               device_get_nameunit(dev),
2074                                               CTLFLAG_RD, 0, "");
2075         if (sc->bge_sysctl_tree == NULL) {
2076                 device_printf(dev, "can't add sysctl node\n");
2077                 error = ENXIO;
2078                 goto fail;
2079         }
2080
2081         SYSCTL_ADD_PROC(&sc->bge_sysctl_ctx,
2082                         SYSCTL_CHILDREN(sc->bge_sysctl_tree),
2083                         OID_AUTO, "rx_coal_ticks",
2084                         CTLTYPE_INT | CTLFLAG_RW,
2085                         sc, 0, bge_sysctl_rx_coal_ticks, "I",
2086                         "Receive coalescing ticks (usec).");
2087         SYSCTL_ADD_PROC(&sc->bge_sysctl_ctx,
2088                         SYSCTL_CHILDREN(sc->bge_sysctl_tree),
2089                         OID_AUTO, "tx_coal_ticks",
2090                         CTLTYPE_INT | CTLFLAG_RW,
2091                         sc, 0, bge_sysctl_tx_coal_ticks, "I",
2092                         "Transmit coalescing ticks (usec).");
2093         SYSCTL_ADD_PROC(&sc->bge_sysctl_ctx,
2094                         SYSCTL_CHILDREN(sc->bge_sysctl_tree),
2095                         OID_AUTO, "rx_max_coal_bds",
2096                         CTLTYPE_INT | CTLFLAG_RW,
2097                         sc, 0, bge_sysctl_rx_max_coal_bds, "I",
2098                         "Receive max coalesced BD count.");
2099         SYSCTL_ADD_PROC(&sc->bge_sysctl_ctx,
2100                         SYSCTL_CHILDREN(sc->bge_sysctl_tree),
2101                         OID_AUTO, "tx_max_coal_bds",
2102                         CTLTYPE_INT | CTLFLAG_RW,
2103                         sc, 0, bge_sysctl_tx_max_coal_bds, "I",
2104                         "Transmit max coalesced BD count.");
2105
2106         /*
2107          * Call MI attach routine.
2108          */
2109         ether_ifattach(ifp, ether_addr, NULL);
2110
2111         error = bus_setup_intr(dev, sc->bge_irq, INTR_MPSAFE,
2112                                bge_intr, sc, &sc->bge_intrhand,
2113                                ifp->if_serializer);
2114         if (error) {
2115                 ether_ifdetach(ifp);
2116                 device_printf(dev, "couldn't set up irq\n");
2117                 goto fail;
2118         }
2119
2120         ifp->if_cpuid = ithread_cpuid(rman_get_start(sc->bge_irq));
2121         KKASSERT(ifp->if_cpuid >= 0 && ifp->if_cpuid < ncpus);
2122
2123         return(0);
2124 fail:
2125         bge_detach(dev);
2126         return(error);
2127 }
2128
2129 static int
2130 bge_detach(device_t dev)
2131 {
2132         struct bge_softc *sc = device_get_softc(dev);
2133
2134         if (device_is_attached(dev)) {
2135                 struct ifnet *ifp = &sc->arpcom.ac_if;
2136
2137                 lwkt_serialize_enter(ifp->if_serializer);
2138                 bge_stop(sc);
2139                 bge_reset(sc);
2140                 bus_teardown_intr(dev, sc->bge_irq, sc->bge_intrhand);
2141                 lwkt_serialize_exit(ifp->if_serializer);
2142
2143                 ether_ifdetach(ifp);
2144         }
2145
2146         if (sc->bge_flags & BGE_FLAG_TBI)
2147                 ifmedia_removeall(&sc->bge_ifmedia);
2148         if (sc->bge_miibus)
2149                 device_delete_child(dev, sc->bge_miibus);
2150         bus_generic_detach(dev);
2151
2152         if (sc->bge_irq != NULL)
2153                 bus_release_resource(dev, SYS_RES_IRQ, 0, sc->bge_irq);
2154
2155         if (sc->bge_res != NULL)
2156                 bus_release_resource(dev, SYS_RES_MEMORY,
2157                     BGE_PCI_BAR0, sc->bge_res);
2158
2159         if (sc->bge_sysctl_tree != NULL)
2160                 sysctl_ctx_free(&sc->bge_sysctl_ctx);
2161
2162         bge_dma_free(sc);
2163
2164         return 0;
2165 }
2166
2167 static void
2168 bge_reset(struct bge_softc *sc)
2169 {
2170         device_t dev;
2171         uint32_t cachesize, command, pcistate, reset;
2172         void (*write_op)(struct bge_softc *, uint32_t, uint32_t);
2173         int i, val = 0;
2174
2175         dev = sc->bge_dev;
2176
2177         if (BGE_IS_575X_PLUS(sc) && !BGE_IS_5714_FAMILY(sc) &&
2178             sc->bge_asicrev != BGE_ASICREV_BCM5906) {
2179                 if (sc->bge_flags & BGE_FLAG_PCIE)
2180                         write_op = bge_writemem_direct;
2181                 else
2182                         write_op = bge_writemem_ind;
2183         } else {
2184                 write_op = bge_writereg_ind;
2185         }
2186
2187         /* Save some important PCI state. */
2188         cachesize = pci_read_config(dev, BGE_PCI_CACHESZ, 4);
2189         command = pci_read_config(dev, BGE_PCI_CMD, 4);
2190         pcistate = pci_read_config(dev, BGE_PCI_PCISTATE, 4);
2191
2192         pci_write_config(dev, BGE_PCI_MISC_CTL,
2193             BGE_PCIMISCCTL_INDIRECT_ACCESS|BGE_PCIMISCCTL_MASK_PCI_INTR|
2194             BGE_HIF_SWAP_OPTIONS|BGE_PCIMISCCTL_PCISTATE_RW, 4);
2195
2196         /* Disable fastboot on controllers that support it. */
2197         if (sc->bge_asicrev == BGE_ASICREV_BCM5752 ||
2198             sc->bge_asicrev == BGE_ASICREV_BCM5755 ||
2199             sc->bge_asicrev == BGE_ASICREV_BCM5787) {
2200                 if (bootverbose)
2201                         if_printf(&sc->arpcom.ac_if, "Disabling fastboot\n");
2202                 CSR_WRITE_4(sc, BGE_FASTBOOT_PC, 0x0);
2203         }
2204
2205         /*
2206          * Write the magic number to SRAM at offset 0xB50.
2207          * When firmware finishes its initialization it will
2208          * write ~BGE_MAGIC_NUMBER to the same location.
2209          */
2210         bge_writemem_ind(sc, BGE_SOFTWARE_GENCOMM, BGE_MAGIC_NUMBER);
2211
2212         reset = BGE_MISCCFG_RESET_CORE_CLOCKS|(65<<1);
2213
2214         /* XXX: Broadcom Linux driver. */
2215         if (sc->bge_flags & BGE_FLAG_PCIE) {
2216                 if (CSR_READ_4(sc, 0x7e2c) == 0x60)     /* PCIE 1.0 */
2217                         CSR_WRITE_4(sc, 0x7e2c, 0x20);
2218                 if (sc->bge_chipid != BGE_CHIPID_BCM5750_A0) {
2219                         /* Prevent PCIE link training during global reset */
2220                         CSR_WRITE_4(sc, BGE_MISC_CFG, (1<<29));
2221                         reset |= (1<<29);
2222                 }
2223         }
2224
2225         /*
2226          * Set GPHY Power Down Override to leave GPHY
2227          * powered up in D0 uninitialized.
2228          */
2229         if (BGE_IS_5705_PLUS(sc))
2230                 reset |= 0x04000000;
2231
2232         /* Issue global reset */
2233         write_op(sc, BGE_MISC_CFG, reset);
2234
2235         if (sc->bge_asicrev == BGE_ASICREV_BCM5906) {
2236                 uint32_t status, ctrl;
2237
2238                 status = CSR_READ_4(sc, BGE_VCPU_STATUS);
2239                 CSR_WRITE_4(sc, BGE_VCPU_STATUS,
2240                     status | BGE_VCPU_STATUS_DRV_RESET);
2241                 ctrl = CSR_READ_4(sc, BGE_VCPU_EXT_CTRL);
2242                 CSR_WRITE_4(sc, BGE_VCPU_EXT_CTRL,
2243                     ctrl & ~BGE_VCPU_EXT_CTRL_HALT_CPU);
2244         }
2245
2246         DELAY(1000);
2247
2248         /* XXX: Broadcom Linux driver. */
2249         if (sc->bge_flags & BGE_FLAG_PCIE) {
2250                 if (sc->bge_chipid == BGE_CHIPID_BCM5750_A0) {
2251                         uint32_t v;
2252
2253                         DELAY(500000); /* wait for link training to complete */
2254                         v = pci_read_config(dev, 0xc4, 4);
2255                         pci_write_config(dev, 0xc4, v | (1<<15), 4);
2256                 }
2257                 /*
2258                  * Set PCIE max payload size to 128 bytes and
2259                  * clear error status.
2260                  */
2261                 pci_write_config(dev, 0xd8, 0xf5000, 4);
2262         }
2263
2264         /* Reset some of the PCI state that got zapped by reset */
2265         pci_write_config(dev, BGE_PCI_MISC_CTL,
2266             BGE_PCIMISCCTL_INDIRECT_ACCESS|BGE_PCIMISCCTL_MASK_PCI_INTR|
2267             BGE_HIF_SWAP_OPTIONS|BGE_PCIMISCCTL_PCISTATE_RW, 4);
2268         pci_write_config(dev, BGE_PCI_CACHESZ, cachesize, 4);
2269         pci_write_config(dev, BGE_PCI_CMD, command, 4);
2270         write_op(sc, BGE_MISC_CFG, (65 << 1));
2271
2272         /* Enable memory arbiter. */
2273         if (BGE_IS_5714_FAMILY(sc)) {
2274                 uint32_t val;
2275
2276                 val = CSR_READ_4(sc, BGE_MARB_MODE);
2277                 CSR_WRITE_4(sc, BGE_MARB_MODE, BGE_MARBMODE_ENABLE | val);
2278         } else {
2279                 CSR_WRITE_4(sc, BGE_MARB_MODE, BGE_MARBMODE_ENABLE);
2280         }
2281
2282         if (sc->bge_asicrev == BGE_ASICREV_BCM5906) {
2283                 for (i = 0; i < BGE_TIMEOUT; i++) {
2284                         val = CSR_READ_4(sc, BGE_VCPU_STATUS);
2285                         if (val & BGE_VCPU_STATUS_INIT_DONE)
2286                                 break;
2287                         DELAY(100);
2288                 }
2289                 if (i == BGE_TIMEOUT) {
2290                         if_printf(&sc->arpcom.ac_if, "reset timed out\n");
2291                         return;
2292                 }
2293         } else {
2294                 /*
2295                  * Poll until we see the 1's complement of the magic number.
2296                  * This indicates that the firmware initialization
2297                  * is complete.
2298                  */
2299                 for (i = 0; i < BGE_FIRMWARE_TIMEOUT; i++) {
2300                         val = bge_readmem_ind(sc, BGE_SOFTWARE_GENCOMM);
2301                         if (val == ~BGE_MAGIC_NUMBER)
2302                                 break;
2303                         DELAY(10);
2304                 }
2305                 if (i == BGE_FIRMWARE_TIMEOUT) {
2306                         if_printf(&sc->arpcom.ac_if, "firmware handshake "
2307                                   "timed out, found 0x%08x\n", val);
2308                         return;
2309                 }
2310         }
2311
2312         /*
2313          * XXX Wait for the value of the PCISTATE register to
2314          * return to its original pre-reset state. This is a
2315          * fairly good indicator of reset completion. If we don't
2316          * wait for the reset to fully complete, trying to read
2317          * from the device's non-PCI registers may yield garbage
2318          * results.
2319          */
2320         for (i = 0; i < BGE_TIMEOUT; i++) {
2321                 if (pci_read_config(dev, BGE_PCI_PCISTATE, 4) == pcistate)
2322                         break;
2323                 DELAY(10);
2324         }
2325
2326         if (sc->bge_flags & BGE_FLAG_PCIE) {
2327                 reset = bge_readmem_ind(sc, 0x7c00);
2328                 bge_writemem_ind(sc, 0x7c00, reset | (1 << 25));
2329         }
2330
2331         /* Fix up byte swapping */
2332         CSR_WRITE_4(sc, BGE_MODE_CTL, BGE_DMA_SWAP_OPTIONS |
2333             BGE_MODECTL_BYTESWAP_DATA);
2334
2335         CSR_WRITE_4(sc, BGE_MAC_MODE, 0);
2336
2337         /*
2338          * The 5704 in TBI mode apparently needs some special
2339          * adjustment to insure the SERDES drive level is set
2340          * to 1.2V.
2341          */
2342         if (sc->bge_asicrev == BGE_ASICREV_BCM5704 &&
2343             (sc->bge_flags & BGE_FLAG_TBI)) {
2344                 uint32_t serdescfg;
2345
2346                 serdescfg = CSR_READ_4(sc, BGE_SERDES_CFG);
2347                 serdescfg = (serdescfg & ~0xFFF) | 0x880;
2348                 CSR_WRITE_4(sc, BGE_SERDES_CFG, serdescfg);
2349         }
2350
2351         /* XXX: Broadcom Linux driver. */
2352         if ((sc->bge_flags & BGE_FLAG_PCIE) &&
2353             sc->bge_chipid != BGE_CHIPID_BCM5750_A0) {
2354                 uint32_t v;
2355
2356                 v = CSR_READ_4(sc, 0x7c00);
2357                 CSR_WRITE_4(sc, 0x7c00, v | (1<<25));
2358         }
2359
2360         DELAY(10000);
2361 }
2362
2363 /*
2364  * Frame reception handling. This is called if there's a frame
2365  * on the receive return list.
2366  *
2367  * Note: we have to be able to handle two possibilities here:
2368  * 1) the frame is from the jumbo recieve ring
2369  * 2) the frame is from the standard receive ring
2370  */
2371
2372 static void
2373 bge_rxeof(struct bge_softc *sc)
2374 {
2375         struct ifnet *ifp;
2376         int stdcnt = 0, jumbocnt = 0;
2377         struct mbuf_chain chain[MAXCPU];
2378
2379         if (sc->bge_rx_saved_considx ==
2380             sc->bge_ldata.bge_status_block->bge_idx[0].bge_rx_prod_idx)
2381                 return;
2382
2383         ether_input_chain_init(chain);
2384
2385         ifp = &sc->arpcom.ac_if;
2386
2387         while (sc->bge_rx_saved_considx !=
2388                sc->bge_ldata.bge_status_block->bge_idx[0].bge_rx_prod_idx) {
2389                 struct bge_rx_bd        *cur_rx;
2390                 uint32_t                rxidx;
2391                 struct mbuf             *m = NULL;
2392                 uint16_t                vlan_tag = 0;
2393                 int                     have_tag = 0;
2394
2395                 cur_rx =
2396             &sc->bge_ldata.bge_rx_return_ring[sc->bge_rx_saved_considx];
2397
2398                 rxidx = cur_rx->bge_idx;
2399                 BGE_INC(sc->bge_rx_saved_considx, sc->bge_return_ring_cnt);
2400                 logif(rx_pkt);
2401
2402                 if (cur_rx->bge_flags & BGE_RXBDFLAG_VLAN_TAG) {
2403                         have_tag = 1;
2404                         vlan_tag = cur_rx->bge_vlan_tag;
2405                 }
2406
2407                 if (cur_rx->bge_flags & BGE_RXBDFLAG_JUMBO_RING) {
2408                         BGE_INC(sc->bge_jumbo, BGE_JUMBO_RX_RING_CNT);
2409                         jumbocnt++;
2410
2411                         if (rxidx != sc->bge_jumbo) {
2412                                 ifp->if_ierrors++;
2413                                 if_printf(ifp, "sw jumbo index(%d) "
2414                                     "and hw jumbo index(%d) mismatch, drop!\n",
2415                                     sc->bge_jumbo, rxidx);
2416                                 bge_setup_rxdesc_jumbo(sc, rxidx);
2417                                 continue;
2418                         }
2419
2420                         m = sc->bge_cdata.bge_rx_jumbo_chain[rxidx].bge_mbuf;
2421                         if (cur_rx->bge_flags & BGE_RXBDFLAG_ERROR) {
2422                                 ifp->if_ierrors++;
2423                                 bge_setup_rxdesc_jumbo(sc, sc->bge_jumbo);
2424                                 continue;
2425                         }
2426                         if (bge_newbuf_jumbo(sc, sc->bge_jumbo, 0)) {
2427                                 ifp->if_ierrors++;
2428                                 bge_setup_rxdesc_jumbo(sc, sc->bge_jumbo);
2429                                 continue;
2430                         }
2431                 } else {
2432                         BGE_INC(sc->bge_std, BGE_STD_RX_RING_CNT);
2433                         stdcnt++;
2434
2435                         if (rxidx != sc->bge_std) {
2436                                 ifp->if_ierrors++;
2437                                 if_printf(ifp, "sw std index(%d) "
2438                                     "and hw std index(%d) mismatch, drop!\n",
2439                                     sc->bge_std, rxidx);
2440                                 bge_setup_rxdesc_std(sc, rxidx);
2441                                 continue;
2442                         }
2443
2444                         m = sc->bge_cdata.bge_rx_std_chain[rxidx].bge_mbuf;
2445                         if (cur_rx->bge_flags & BGE_RXBDFLAG_ERROR) {
2446                                 ifp->if_ierrors++;
2447                                 bge_setup_rxdesc_std(sc, sc->bge_std);
2448                                 continue;
2449                         }
2450                         if (bge_newbuf_std(sc, sc->bge_std, 0)) {
2451                                 ifp->if_ierrors++;
2452                                 bge_setup_rxdesc_std(sc, sc->bge_std);
2453                                 continue;
2454                         }
2455                 }
2456
2457                 ifp->if_ipackets++;
2458 #ifndef __i386__
2459                 /*
2460                  * The i386 allows unaligned accesses, but for other
2461                  * platforms we must make sure the payload is aligned.
2462                  */
2463                 if (sc->bge_flags & BGE_FLAG_RX_ALIGNBUG) {
2464                         bcopy(m->m_data, m->m_data + ETHER_ALIGN,
2465                             cur_rx->bge_len);
2466                         m->m_data += ETHER_ALIGN;
2467                 }
2468 #endif
2469                 m->m_pkthdr.len = m->m_len = cur_rx->bge_len - ETHER_CRC_LEN;
2470                 m->m_pkthdr.rcvif = ifp;
2471
2472                 if (ifp->if_capenable & IFCAP_RXCSUM) {
2473                         if (cur_rx->bge_flags & BGE_RXBDFLAG_IP_CSUM) {
2474                                 m->m_pkthdr.csum_flags |= CSUM_IP_CHECKED;
2475                                 if ((cur_rx->bge_ip_csum ^ 0xffff) == 0)
2476                                         m->m_pkthdr.csum_flags |= CSUM_IP_VALID;
2477                         }
2478                         if ((cur_rx->bge_flags & BGE_RXBDFLAG_TCP_UDP_CSUM) &&
2479                             m->m_pkthdr.len >= BGE_MIN_FRAME) {
2480                                 m->m_pkthdr.csum_data =
2481                                         cur_rx->bge_tcp_udp_csum;
2482                                 m->m_pkthdr.csum_flags |=
2483                                         CSUM_DATA_VALID | CSUM_PSEUDO_HDR;
2484                         }
2485                 }
2486
2487                 /*
2488                  * If we received a packet with a vlan tag, pass it
2489                  * to vlan_input() instead of ether_input().
2490                  */
2491                 if (have_tag) {
2492                         m->m_flags |= M_VLANTAG;
2493                         m->m_pkthdr.ether_vlantag = vlan_tag;
2494                         have_tag = vlan_tag = 0;
2495                 }
2496                 ether_input_chain(ifp, m, NULL, chain);
2497         }
2498
2499         ether_input_dispatch(chain);
2500
2501         bge_writembx(sc, BGE_MBX_RX_CONS0_LO, sc->bge_rx_saved_considx);
2502         if (stdcnt)
2503                 bge_writembx(sc, BGE_MBX_RX_STD_PROD_LO, sc->bge_std);
2504         if (jumbocnt)
2505                 bge_writembx(sc, BGE_MBX_RX_JUMBO_PROD_LO, sc->bge_jumbo);
2506 }
2507
2508 static void
2509 bge_txeof(struct bge_softc *sc)
2510 {
2511         struct bge_tx_bd *cur_tx = NULL;
2512         struct ifnet *ifp;
2513
2514         if (sc->bge_tx_saved_considx ==
2515             sc->bge_ldata.bge_status_block->bge_idx[0].bge_tx_cons_idx)
2516                 return;
2517
2518         ifp = &sc->arpcom.ac_if;
2519
2520         /*
2521          * Go through our tx ring and free mbufs for those
2522          * frames that have been sent.
2523          */
2524         while (sc->bge_tx_saved_considx !=
2525                sc->bge_ldata.bge_status_block->bge_idx[0].bge_tx_cons_idx) {
2526                 uint32_t idx = 0;
2527
2528                 idx = sc->bge_tx_saved_considx;
2529                 cur_tx = &sc->bge_ldata.bge_tx_ring[idx];
2530                 if (cur_tx->bge_flags & BGE_TXBDFLAG_END)
2531                         ifp->if_opackets++;
2532                 if (sc->bge_cdata.bge_tx_chain[idx] != NULL) {
2533                         bus_dmamap_unload(sc->bge_cdata.bge_tx_mtag,
2534                             sc->bge_cdata.bge_tx_dmamap[idx]);
2535                         m_freem(sc->bge_cdata.bge_tx_chain[idx]);
2536                         sc->bge_cdata.bge_tx_chain[idx] = NULL;
2537                 }
2538                 sc->bge_txcnt--;
2539                 BGE_INC(sc->bge_tx_saved_considx, BGE_TX_RING_CNT);
2540                 logif(tx_pkt);
2541         }
2542
2543         if (cur_tx != NULL &&
2544             (BGE_TX_RING_CNT - sc->bge_txcnt) >=
2545             (BGE_NSEG_RSVD + BGE_NSEG_SPARE))
2546                 ifp->if_flags &= ~IFF_OACTIVE;
2547
2548         if (sc->bge_txcnt == 0)
2549                 ifp->if_timer = 0;
2550
2551         if (!ifq_is_empty(&ifp->if_snd))
2552                 if_devstart(ifp);
2553 }
2554
2555 #ifdef DEVICE_POLLING
2556
2557 static void
2558 bge_poll(struct ifnet *ifp, enum poll_cmd cmd, int count)
2559 {
2560         struct bge_softc *sc = ifp->if_softc;
2561         uint32_t status;
2562
2563         switch(cmd) {
2564         case POLL_REGISTER:
2565                 bge_disable_intr(sc);
2566                 break;
2567         case POLL_DEREGISTER:
2568                 bge_enable_intr(sc);
2569                 break;
2570         case POLL_AND_CHECK_STATUS:
2571                 /*
2572                  * Process link state changes.
2573                  */
2574                 status = CSR_READ_4(sc, BGE_MAC_STS);
2575                 if ((status & sc->bge_link_chg) || sc->bge_link_evt) {
2576                         sc->bge_link_evt = 0;
2577                         sc->bge_link_upd(sc, status);
2578                 }
2579                 /* fall through */
2580         case POLL_ONLY:
2581                 if (ifp->if_flags & IFF_RUNNING) {
2582                         bge_rxeof(sc);
2583                         bge_txeof(sc);
2584                 }
2585                 break;
2586         }
2587 }
2588
2589 #endif
2590
2591 static void
2592 bge_intr(void *xsc)
2593 {
2594         struct bge_softc *sc = xsc;
2595         struct ifnet *ifp = &sc->arpcom.ac_if;
2596         uint32_t status;
2597
2598         logif(intr);
2599
2600         /*
2601          * Ack the interrupt by writing something to BGE_MBX_IRQ0_LO.  Don't
2602          * disable interrupts by writing nonzero like we used to, since with
2603          * our current organization this just gives complications and
2604          * pessimizations for re-enabling interrupts.  We used to have races
2605          * instead of the necessary complications.  Disabling interrupts
2606          * would just reduce the chance of a status update while we are
2607          * running (by switching to the interrupt-mode coalescence
2608          * parameters), but this chance is already very low so it is more
2609          * efficient to get another interrupt than prevent it.
2610          *
2611          * We do the ack first to ensure another interrupt if there is a
2612          * status update after the ack.  We don't check for the status
2613          * changing later because it is more efficient to get another
2614          * interrupt than prevent it, not quite as above (not checking is
2615          * a smaller optimization than not toggling the interrupt enable,
2616          * since checking doesn't involve PCI accesses and toggling require
2617          * the status check).  So toggling would probably be a pessimization
2618          * even with MSI.  It would only be needed for using a task queue.
2619          */
2620         bge_writembx(sc, BGE_MBX_IRQ0_LO, 0);
2621
2622         /*
2623          * Process link state changes.
2624          */
2625         status = CSR_READ_4(sc, BGE_MAC_STS);
2626         if ((status & sc->bge_link_chg) || sc->bge_link_evt) {
2627                 sc->bge_link_evt = 0;
2628                 sc->bge_link_upd(sc, status);
2629         }
2630
2631         if (ifp->if_flags & IFF_RUNNING) {
2632                 /* Check RX return ring producer/consumer */
2633                 bge_rxeof(sc);
2634
2635                 /* Check TX ring producer/consumer */
2636                 bge_txeof(sc);
2637         }
2638
2639         if (sc->bge_coal_chg)
2640                 bge_coal_change(sc);
2641 }
2642
2643 static void
2644 bge_tick(void *xsc)
2645 {
2646         struct bge_softc *sc = xsc;
2647         struct ifnet *ifp = &sc->arpcom.ac_if;
2648
2649         lwkt_serialize_enter(ifp->if_serializer);
2650
2651         if (BGE_IS_5705_PLUS(sc))
2652                 bge_stats_update_regs(sc);
2653         else
2654                 bge_stats_update(sc);
2655
2656         if (sc->bge_flags & BGE_FLAG_TBI) {
2657                 /*
2658                  * Since in TBI mode auto-polling can't be used we should poll
2659                  * link status manually. Here we register pending link event
2660                  * and trigger interrupt.
2661                  */
2662                 sc->bge_link_evt++;
2663                 BGE_SETBIT(sc, BGE_MISC_LOCAL_CTL, BGE_MLC_INTR_SET);
2664         } else if (!sc->bge_link) {
2665                 mii_tick(device_get_softc(sc->bge_miibus));
2666         }
2667
2668         callout_reset(&sc->bge_stat_timer, hz, bge_tick, sc);
2669
2670         lwkt_serialize_exit(ifp->if_serializer);
2671 }
2672
2673 static void
2674 bge_stats_update_regs(struct bge_softc *sc)
2675 {
2676         struct ifnet *ifp = &sc->arpcom.ac_if;
2677         struct bge_mac_stats_regs stats;
2678         uint32_t *s;
2679         int i;
2680
2681         s = (uint32_t *)&stats;
2682         for (i = 0; i < sizeof(struct bge_mac_stats_regs); i += 4) {
2683                 *s = CSR_READ_4(sc, BGE_RX_STATS + i);
2684                 s++;
2685         }
2686
2687         ifp->if_collisions +=
2688            (stats.dot3StatsSingleCollisionFrames +
2689            stats.dot3StatsMultipleCollisionFrames +
2690            stats.dot3StatsExcessiveCollisions +
2691            stats.dot3StatsLateCollisions) -
2692            ifp->if_collisions;
2693 }
2694
2695 static void
2696 bge_stats_update(struct bge_softc *sc)
2697 {
2698         struct ifnet *ifp = &sc->arpcom.ac_if;
2699         bus_size_t stats;
2700
2701         stats = BGE_MEMWIN_START + BGE_STATS_BLOCK;
2702
2703 #define READ_STAT(sc, stats, stat)      \
2704         CSR_READ_4(sc, stats + offsetof(struct bge_stats, stat))
2705
2706         ifp->if_collisions +=
2707            (READ_STAT(sc, stats,
2708                 txstats.dot3StatsSingleCollisionFrames.bge_addr_lo) +
2709             READ_STAT(sc, stats,
2710                 txstats.dot3StatsMultipleCollisionFrames.bge_addr_lo) +
2711             READ_STAT(sc, stats,
2712                 txstats.dot3StatsExcessiveCollisions.bge_addr_lo) +
2713             READ_STAT(sc, stats,
2714                 txstats.dot3StatsLateCollisions.bge_addr_lo)) -
2715            ifp->if_collisions;
2716
2717 #undef READ_STAT
2718
2719 #ifdef notdef
2720         ifp->if_collisions +=
2721            (sc->bge_rdata->bge_info.bge_stats.dot3StatsSingleCollisionFrames +
2722            sc->bge_rdata->bge_info.bge_stats.dot3StatsMultipleCollisionFrames +
2723            sc->bge_rdata->bge_info.bge_stats.dot3StatsExcessiveCollisions +
2724            sc->bge_rdata->bge_info.bge_stats.dot3StatsLateCollisions) -
2725            ifp->if_collisions;
2726 #endif
2727 }
2728
2729 /*
2730  * Encapsulate an mbuf chain in the tx ring  by coupling the mbuf data
2731  * pointers to descriptors.
2732  */
2733 static int
2734 bge_encap(struct bge_softc *sc, struct mbuf **m_head0, uint32_t *txidx)
2735 {
2736         struct bge_tx_bd *d = NULL;
2737         uint16_t csum_flags = 0;
2738         bus_dma_segment_t segs[BGE_NSEG_NEW];
2739         bus_dmamap_t map;
2740         int error, maxsegs, nsegs, idx, i;
2741         struct mbuf *m_head = *m_head0;
2742
2743         if (m_head->m_pkthdr.csum_flags) {
2744                 if (m_head->m_pkthdr.csum_flags & CSUM_IP)
2745                         csum_flags |= BGE_TXBDFLAG_IP_CSUM;
2746                 if (m_head->m_pkthdr.csum_flags & (CSUM_TCP | CSUM_UDP))
2747                         csum_flags |= BGE_TXBDFLAG_TCP_UDP_CSUM;
2748                 if (m_head->m_flags & M_LASTFRAG)
2749                         csum_flags |= BGE_TXBDFLAG_IP_FRAG_END;
2750                 else if (m_head->m_flags & M_FRAG)
2751                         csum_flags |= BGE_TXBDFLAG_IP_FRAG;
2752         }
2753
2754         idx = *txidx;
2755         map = sc->bge_cdata.bge_tx_dmamap[idx];
2756
2757         maxsegs = (BGE_TX_RING_CNT - sc->bge_txcnt) - BGE_NSEG_RSVD;
2758         KASSERT(maxsegs >= BGE_NSEG_SPARE,
2759                 ("not enough segments %d\n", maxsegs));
2760
2761         if (maxsegs > BGE_NSEG_NEW)
2762                 maxsegs = BGE_NSEG_NEW;
2763
2764         /*
2765          * Pad outbound frame to BGE_MIN_FRAME for an unusual reason.
2766          * The bge hardware will pad out Tx runts to BGE_MIN_FRAME,
2767          * but when such padded frames employ the bge IP/TCP checksum
2768          * offload, the hardware checksum assist gives incorrect results
2769          * (possibly from incorporating its own padding into the UDP/TCP
2770          * checksum; who knows).  If we pad such runts with zeros, the
2771          * onboard checksum comes out correct.
2772          */
2773         if ((csum_flags & BGE_TXBDFLAG_TCP_UDP_CSUM) &&
2774             m_head->m_pkthdr.len < BGE_MIN_FRAME) {
2775                 error = m_devpad(m_head, BGE_MIN_FRAME);
2776                 if (error)
2777                         goto back;
2778         }
2779
2780         error = bus_dmamap_load_mbuf_defrag(sc->bge_cdata.bge_tx_mtag, map,
2781                         m_head0, segs, maxsegs, &nsegs, BUS_DMA_NOWAIT);
2782         if (error)
2783                 goto back;
2784
2785         m_head = *m_head0;
2786         bus_dmamap_sync(sc->bge_cdata.bge_tx_mtag, map, BUS_DMASYNC_PREWRITE);
2787
2788         for (i = 0; ; i++) {
2789                 d = &sc->bge_ldata.bge_tx_ring[idx];
2790
2791                 d->bge_addr.bge_addr_lo = BGE_ADDR_LO(segs[i].ds_addr);
2792                 d->bge_addr.bge_addr_hi = BGE_ADDR_HI(segs[i].ds_addr);
2793                 d->bge_len = segs[i].ds_len;
2794                 d->bge_flags = csum_flags;
2795
2796                 if (i == nsegs - 1)
2797                         break;
2798                 BGE_INC(idx, BGE_TX_RING_CNT);
2799         }
2800         /* Mark the last segment as end of packet... */
2801         d->bge_flags |= BGE_TXBDFLAG_END;
2802
2803         /* Set vlan tag to the first segment of the packet. */
2804         d = &sc->bge_ldata.bge_tx_ring[*txidx];
2805         if (m_head->m_flags & M_VLANTAG) {
2806                 d->bge_flags |= BGE_TXBDFLAG_VLAN_TAG;
2807                 d->bge_vlan_tag = m_head->m_pkthdr.ether_vlantag;
2808         } else {
2809                 d->bge_vlan_tag = 0;
2810         }
2811
2812         /*
2813          * Insure that the map for this transmission is placed at
2814          * the array index of the last descriptor in this chain.
2815          */
2816         sc->bge_cdata.bge_tx_dmamap[*txidx] = sc->bge_cdata.bge_tx_dmamap[idx];
2817         sc->bge_cdata.bge_tx_dmamap[idx] = map;
2818         sc->bge_cdata.bge_tx_chain[idx] = m_head;
2819         sc->bge_txcnt += nsegs;
2820
2821         BGE_INC(idx, BGE_TX_RING_CNT);
2822         *txidx = idx;
2823 back:
2824         if (error) {
2825                 m_freem(*m_head0);
2826                 *m_head0 = NULL;
2827         }
2828         return error;
2829 }
2830
2831 /*
2832  * Main transmit routine. To avoid having to do mbuf copies, we put pointers
2833  * to the mbuf data regions directly in the transmit descriptors.
2834  */
2835 static void
2836 bge_start(struct ifnet *ifp)
2837 {
2838         struct bge_softc *sc = ifp->if_softc;
2839         struct mbuf *m_head = NULL;
2840         uint32_t prodidx;
2841         int need_trans;
2842
2843         if ((ifp->if_flags & (IFF_RUNNING | IFF_OACTIVE)) != IFF_RUNNING)
2844                 return;
2845
2846         prodidx = sc->bge_tx_prodidx;
2847
2848         need_trans = 0;
2849         while (sc->bge_cdata.bge_tx_chain[prodidx] == NULL) {
2850                 m_head = ifq_dequeue(&ifp->if_snd, NULL);
2851                 if (m_head == NULL)
2852                         break;
2853
2854                 /*
2855                  * XXX
2856                  * The code inside the if() block is never reached since we
2857                  * must mark CSUM_IP_FRAGS in our if_hwassist to start getting
2858                  * requests to checksum TCP/UDP in a fragmented packet.
2859                  *
2860                  * XXX
2861                  * safety overkill.  If this is a fragmented packet chain
2862                  * with delayed TCP/UDP checksums, then only encapsulate
2863                  * it if we have enough descriptors to handle the entire
2864                  * chain at once.
2865                  * (paranoia -- may not actually be needed)
2866                  */
2867                 if ((m_head->m_flags & M_FIRSTFRAG) &&
2868                     (m_head->m_pkthdr.csum_flags & CSUM_DELAY_DATA)) {
2869                         if ((BGE_TX_RING_CNT - sc->bge_txcnt) <
2870                             m_head->m_pkthdr.csum_data + BGE_NSEG_RSVD) {
2871                                 ifp->if_flags |= IFF_OACTIVE;
2872                                 ifq_prepend(&ifp->if_snd, m_head);
2873                                 break;
2874                         }
2875                 }
2876
2877                 /*
2878                  * Sanity check: avoid coming within BGE_NSEG_RSVD
2879                  * descriptors of the end of the ring.  Also make
2880                  * sure there are BGE_NSEG_SPARE descriptors for
2881                  * jumbo buffers' defragmentation.
2882                  */
2883                 if ((BGE_TX_RING_CNT - sc->bge_txcnt) <
2884                     (BGE_NSEG_RSVD + BGE_NSEG_SPARE)) {
2885                         ifp->if_flags |= IFF_OACTIVE;
2886                         ifq_prepend(&ifp->if_snd, m_head);
2887                         break;
2888                 }
2889
2890                 /*
2891                  * Pack the data into the transmit ring. If we
2892                  * don't have room, set the OACTIVE flag and wait
2893                  * for the NIC to drain the ring.
2894                  */
2895                 if (bge_encap(sc, &m_head, &prodidx)) {
2896                         ifp->if_flags |= IFF_OACTIVE;
2897                         ifp->if_oerrors++;
2898                         break;
2899                 }
2900                 need_trans = 1;
2901
2902                 ETHER_BPF_MTAP(ifp, m_head);
2903         }
2904
2905         if (!need_trans)
2906                 return;
2907
2908         /* Transmit */
2909         bge_writembx(sc, BGE_MBX_TX_HOST_PROD0_LO, prodidx);
2910         /* 5700 b2 errata */
2911         if (sc->bge_chiprev == BGE_CHIPREV_5700_BX)
2912                 bge_writembx(sc, BGE_MBX_TX_HOST_PROD0_LO, prodidx);
2913
2914         sc->bge_tx_prodidx = prodidx;
2915
2916         /*
2917          * Set a timeout in case the chip goes out to lunch.
2918          */
2919         ifp->if_timer = 5;
2920 }
2921
2922 static void
2923 bge_init(void *xsc)
2924 {
2925         struct bge_softc *sc = xsc;
2926         struct ifnet *ifp = &sc->arpcom.ac_if;
2927         uint16_t *m;
2928
2929         ASSERT_SERIALIZED(ifp->if_serializer);
2930
2931         if (ifp->if_flags & IFF_RUNNING)
2932                 return;
2933
2934         /* Cancel pending I/O and flush buffers. */
2935         bge_stop(sc);
2936         bge_reset(sc);
2937         bge_chipinit(sc);
2938
2939         /*
2940          * Init the various state machines, ring
2941          * control blocks and firmware.
2942          */
2943         if (bge_blockinit(sc)) {
2944                 if_printf(ifp, "initialization failure\n");
2945                 bge_stop(sc);
2946                 return;
2947         }
2948
2949         /* Specify MTU. */
2950         CSR_WRITE_4(sc, BGE_RX_MTU, ifp->if_mtu +
2951             ETHER_HDR_LEN + ETHER_CRC_LEN + EVL_ENCAPLEN);
2952
2953         /* Load our MAC address. */
2954         m = (uint16_t *)&sc->arpcom.ac_enaddr[0];
2955         CSR_WRITE_4(sc, BGE_MAC_ADDR1_LO, htons(m[0]));
2956         CSR_WRITE_4(sc, BGE_MAC_ADDR1_HI, (htons(m[1]) << 16) | htons(m[2]));
2957
2958         /* Enable or disable promiscuous mode as needed. */
2959         bge_setpromisc(sc);
2960
2961         /* Program multicast filter. */
2962         bge_setmulti(sc);
2963
2964         /* Init RX ring. */
2965         if (bge_init_rx_ring_std(sc)) {
2966                 if_printf(ifp, "RX ring initialization failed\n");
2967                 bge_stop(sc);
2968                 return;
2969         }
2970
2971         /*
2972          * Workaround for a bug in 5705 ASIC rev A0. Poll the NIC's
2973          * memory to insure that the chip has in fact read the first
2974          * entry of the ring.
2975          */
2976         if (sc->bge_chipid == BGE_CHIPID_BCM5705_A0) {
2977                 uint32_t                v, i;
2978                 for (i = 0; i < 10; i++) {
2979                         DELAY(20);
2980                         v = bge_readmem_ind(sc, BGE_STD_RX_RINGS + 8);
2981                         if (v == (MCLBYTES - ETHER_ALIGN))
2982                                 break;
2983                 }
2984                 if (i == 10)
2985                         if_printf(ifp, "5705 A0 chip failed to load RX ring\n");
2986         }
2987
2988         /* Init jumbo RX ring. */
2989         if (ifp->if_mtu > (ETHERMTU + ETHER_HDR_LEN + ETHER_CRC_LEN)) {
2990                 if (bge_init_rx_ring_jumbo(sc)) {
2991                         if_printf(ifp, "Jumbo RX ring initialization failed\n");
2992                         bge_stop(sc);
2993                         return;
2994                 }
2995         }
2996
2997         /* Init our RX return ring index */
2998         sc->bge_rx_saved_considx = 0;
2999
3000         /* Init TX ring. */
3001         bge_init_tx_ring(sc);
3002
3003         /* Turn on transmitter */
3004         BGE_SETBIT(sc, BGE_TX_MODE, BGE_TXMODE_ENABLE);
3005
3006         /* Turn on receiver */
3007         BGE_SETBIT(sc, BGE_RX_MODE, BGE_RXMODE_ENABLE);
3008
3009         /* Tell firmware we're alive. */
3010         BGE_SETBIT(sc, BGE_MODE_CTL, BGE_MODECTL_STACKUP);
3011
3012         /* Enable host interrupts if polling(4) is not enabled. */
3013         BGE_SETBIT(sc, BGE_PCI_MISC_CTL, BGE_PCIMISCCTL_CLEAR_INTA);
3014 #ifdef DEVICE_POLLING
3015         if (ifp->if_flags & IFF_POLLING)
3016                 bge_disable_intr(sc);
3017         else
3018 #endif
3019         bge_enable_intr(sc);
3020
3021         bge_ifmedia_upd(ifp);
3022
3023         ifp->if_flags |= IFF_RUNNING;
3024         ifp->if_flags &= ~IFF_OACTIVE;
3025
3026         callout_reset(&sc->bge_stat_timer, hz, bge_tick, sc);
3027 }
3028
3029 /*
3030  * Set media options.
3031  */
3032 static int
3033 bge_ifmedia_upd(struct ifnet *ifp)
3034 {
3035         struct bge_softc *sc = ifp->if_softc;
3036
3037         /* If this is a 1000baseX NIC, enable the TBI port. */
3038         if (sc->bge_flags & BGE_FLAG_TBI) {
3039                 struct ifmedia *ifm = &sc->bge_ifmedia;
3040
3041                 if (IFM_TYPE(ifm->ifm_media) != IFM_ETHER)
3042                         return(EINVAL);
3043
3044                 switch(IFM_SUBTYPE(ifm->ifm_media)) {
3045                 case IFM_AUTO:
3046                         /*
3047                          * The BCM5704 ASIC appears to have a special
3048                          * mechanism for programming the autoneg
3049                          * advertisement registers in TBI mode.
3050                          */
3051                         if (!bge_fake_autoneg &&
3052                             sc->bge_asicrev == BGE_ASICREV_BCM5704) {
3053                                 uint32_t sgdig;
3054
3055                                 CSR_WRITE_4(sc, BGE_TX_TBI_AUTONEG, 0);
3056                                 sgdig = CSR_READ_4(sc, BGE_SGDIG_CFG);
3057                                 sgdig |= BGE_SGDIGCFG_AUTO |
3058                                          BGE_SGDIGCFG_PAUSE_CAP |
3059                                          BGE_SGDIGCFG_ASYM_PAUSE;
3060                                 CSR_WRITE_4(sc, BGE_SGDIG_CFG,
3061                                             sgdig | BGE_SGDIGCFG_SEND);
3062                                 DELAY(5);
3063                                 CSR_WRITE_4(sc, BGE_SGDIG_CFG, sgdig);
3064                         }
3065                         break;
3066                 case IFM_1000_SX:
3067                         if ((ifm->ifm_media & IFM_GMASK) == IFM_FDX) {
3068                                 BGE_CLRBIT(sc, BGE_MAC_MODE,
3069                                     BGE_MACMODE_HALF_DUPLEX);
3070                         } else {
3071                                 BGE_SETBIT(sc, BGE_MAC_MODE,
3072                                     BGE_MACMODE_HALF_DUPLEX);
3073                         }
3074                         break;
3075                 default:
3076                         return(EINVAL);
3077                 }
3078         } else {
3079                 struct mii_data *mii = device_get_softc(sc->bge_miibus);
3080
3081                 sc->bge_link_evt++;
3082                 sc->bge_link = 0;
3083                 if (mii->mii_instance) {
3084                         struct mii_softc *miisc;
3085
3086                         LIST_FOREACH(miisc, &mii->mii_phys, mii_list)
3087                                 mii_phy_reset(miisc);
3088                 }
3089                 mii_mediachg(mii);
3090         }
3091         return(0);
3092 }
3093
3094 /*
3095  * Report current media status.
3096  */
3097 static void
3098 bge_ifmedia_sts(struct ifnet *ifp, struct ifmediareq *ifmr)
3099 {
3100         struct bge_softc *sc = ifp->if_softc;
3101
3102         if (sc->bge_flags & BGE_FLAG_TBI) {
3103                 ifmr->ifm_status = IFM_AVALID;
3104                 ifmr->ifm_active = IFM_ETHER;
3105                 if (CSR_READ_4(sc, BGE_MAC_STS) &
3106                     BGE_MACSTAT_TBI_PCS_SYNCHED) {
3107                         ifmr->ifm_status |= IFM_ACTIVE;
3108                 } else {
3109                         ifmr->ifm_active |= IFM_NONE;
3110                         return;
3111                 }
3112
3113                 ifmr->ifm_active |= IFM_1000_SX;
3114                 if (CSR_READ_4(sc, BGE_MAC_MODE) & BGE_MACMODE_HALF_DUPLEX)
3115                         ifmr->ifm_active |= IFM_HDX;
3116                 else
3117                         ifmr->ifm_active |= IFM_FDX;
3118         } else {
3119                 struct mii_data *mii = device_get_softc(sc->bge_miibus);
3120
3121                 mii_pollstat(mii);
3122                 ifmr->ifm_active = mii->mii_media_active;
3123                 ifmr->ifm_status = mii->mii_media_status;
3124         }
3125 }
3126
3127 static int
3128 bge_ioctl(struct ifnet *ifp, u_long command, caddr_t data, struct ucred *cr)
3129 {
3130         struct bge_softc *sc = ifp->if_softc;
3131         struct ifreq *ifr = (struct ifreq *)data;
3132         int mask, error = 0;
3133
3134         ASSERT_SERIALIZED(ifp->if_serializer);
3135
3136         switch (command) {
3137         case SIOCSIFMTU:
3138                 if ((!BGE_IS_JUMBO_CAPABLE(sc) && ifr->ifr_mtu > ETHERMTU) ||
3139                     (BGE_IS_JUMBO_CAPABLE(sc) &&
3140                      ifr->ifr_mtu > BGE_JUMBO_MTU)) {
3141                         error = EINVAL;
3142                 } else if (ifp->if_mtu != ifr->ifr_mtu) {
3143                         ifp->if_mtu = ifr->ifr_mtu;
3144                         ifp->if_flags &= ~IFF_RUNNING;
3145                         bge_init(sc);
3146                 }
3147                 break;
3148         case SIOCSIFFLAGS:
3149                 if (ifp->if_flags & IFF_UP) {
3150                         if (ifp->if_flags & IFF_RUNNING) {
3151                                 mask = ifp->if_flags ^ sc->bge_if_flags;
3152
3153                                 /*
3154                                  * If only the state of the PROMISC flag
3155                                  * changed, then just use the 'set promisc
3156                                  * mode' command instead of reinitializing
3157                                  * the entire NIC. Doing a full re-init
3158                                  * means reloading the firmware and waiting
3159                                  * for it to start up, which may take a
3160                                  * second or two.  Similarly for ALLMULTI.
3161                                  */
3162                                 if (mask & IFF_PROMISC)
3163                                         bge_setpromisc(sc);
3164                                 if (mask & IFF_ALLMULTI)
3165                                         bge_setmulti(sc);
3166                         } else {
3167                                 bge_init(sc);
3168                         }
3169                 } else {
3170                         if (ifp->if_flags & IFF_RUNNING)
3171                                 bge_stop(sc);
3172                 }
3173                 sc->bge_if_flags = ifp->if_flags;
3174                 break;
3175         case SIOCADDMULTI:
3176         case SIOCDELMULTI:
3177                 if (ifp->if_flags & IFF_RUNNING)
3178                         bge_setmulti(sc);
3179                 break;
3180         case SIOCSIFMEDIA:
3181         case SIOCGIFMEDIA:
3182                 if (sc->bge_flags & BGE_FLAG_TBI) {
3183                         error = ifmedia_ioctl(ifp, ifr,
3184                             &sc->bge_ifmedia, command);
3185                 } else {
3186                         struct mii_data *mii;
3187
3188                         mii = device_get_softc(sc->bge_miibus);
3189                         error = ifmedia_ioctl(ifp, ifr,
3190                                               &mii->mii_media, command);
3191                 }
3192                 break;
3193         case SIOCSIFCAP:
3194                 mask = ifr->ifr_reqcap ^ ifp->if_capenable;
3195                 if (mask & IFCAP_HWCSUM) {
3196                         ifp->if_capenable ^= (mask & IFCAP_HWCSUM);
3197                         if (IFCAP_HWCSUM & ifp->if_capenable)
3198                                 ifp->if_hwassist = BGE_CSUM_FEATURES;
3199                         else
3200                                 ifp->if_hwassist = 0;
3201                 }
3202                 break;
3203         default:
3204                 error = ether_ioctl(ifp, command, data);
3205                 break;
3206         }
3207         return error;
3208 }
3209
3210 static void
3211 bge_watchdog(struct ifnet *ifp)
3212 {
3213         struct bge_softc *sc = ifp->if_softc;
3214
3215         if_printf(ifp, "watchdog timeout -- resetting\n");
3216
3217         ifp->if_flags &= ~IFF_RUNNING;
3218         bge_init(sc);
3219
3220         ifp->if_oerrors++;
3221
3222         if (!ifq_is_empty(&ifp->if_snd))
3223                 if_devstart(ifp);
3224 }
3225
3226 /*
3227  * Stop the adapter and free any mbufs allocated to the
3228  * RX and TX lists.
3229  */
3230 static void
3231 bge_stop(struct bge_softc *sc)
3232 {
3233         struct ifnet *ifp = &sc->arpcom.ac_if;
3234         struct ifmedia_entry *ifm;
3235         struct mii_data *mii = NULL;
3236         int mtmp, itmp;
3237
3238         ASSERT_SERIALIZED(ifp->if_serializer);
3239
3240         if ((sc->bge_flags & BGE_FLAG_TBI) == 0)
3241                 mii = device_get_softc(sc->bge_miibus);
3242
3243         callout_stop(&sc->bge_stat_timer);
3244
3245         /*
3246          * Disable all of the receiver blocks
3247          */
3248         BGE_CLRBIT(sc, BGE_RX_MODE, BGE_RXMODE_ENABLE);
3249         BGE_CLRBIT(sc, BGE_RBDI_MODE, BGE_RBDIMODE_ENABLE);
3250         BGE_CLRBIT(sc, BGE_RXLP_MODE, BGE_RXLPMODE_ENABLE);
3251         if (!BGE_IS_5705_PLUS(sc))
3252                 BGE_CLRBIT(sc, BGE_RXLS_MODE, BGE_RXLSMODE_ENABLE);
3253         BGE_CLRBIT(sc, BGE_RDBDI_MODE, BGE_RBDIMODE_ENABLE);
3254         BGE_CLRBIT(sc, BGE_RDC_MODE, BGE_RDCMODE_ENABLE);
3255         BGE_CLRBIT(sc, BGE_RBDC_MODE, BGE_RBDCMODE_ENABLE);
3256
3257         /*
3258          * Disable all of the transmit blocks
3259          */
3260         BGE_CLRBIT(sc, BGE_SRS_MODE, BGE_SRSMODE_ENABLE);
3261         BGE_CLRBIT(sc, BGE_SBDI_MODE, BGE_SBDIMODE_ENABLE);
3262         BGE_CLRBIT(sc, BGE_SDI_MODE, BGE_SDIMODE_ENABLE);
3263         BGE_CLRBIT(sc, BGE_RDMA_MODE, BGE_RDMAMODE_ENABLE);
3264         BGE_CLRBIT(sc, BGE_SDC_MODE, BGE_SDCMODE_ENABLE);
3265         if (!BGE_IS_5705_PLUS(sc))
3266                 BGE_CLRBIT(sc, BGE_DMAC_MODE, BGE_DMACMODE_ENABLE);
3267         BGE_CLRBIT(sc, BGE_SBDC_MODE, BGE_SBDCMODE_ENABLE);
3268
3269         /*
3270          * Shut down all of the memory managers and related
3271          * state machines.
3272          */
3273         BGE_CLRBIT(sc, BGE_HCC_MODE, BGE_HCCMODE_ENABLE);
3274         BGE_CLRBIT(sc, BGE_WDMA_MODE, BGE_WDMAMODE_ENABLE);
3275         if (!BGE_IS_5705_PLUS(sc))
3276                 BGE_CLRBIT(sc, BGE_MBCF_MODE, BGE_MBCFMODE_ENABLE);
3277         CSR_WRITE_4(sc, BGE_FTQ_RESET, 0xFFFFFFFF);
3278         CSR_WRITE_4(sc, BGE_FTQ_RESET, 0);
3279         if (!BGE_IS_5705_PLUS(sc)) {
3280                 BGE_CLRBIT(sc, BGE_BMAN_MODE, BGE_BMANMODE_ENABLE);
3281                 BGE_CLRBIT(sc, BGE_MARB_MODE, BGE_MARBMODE_ENABLE);
3282         }
3283
3284         /* Disable host interrupts. */
3285         bge_disable_intr(sc);
3286
3287         /*
3288          * Tell firmware we're shutting down.
3289          */
3290         BGE_CLRBIT(sc, BGE_MODE_CTL, BGE_MODECTL_STACKUP);
3291
3292         /* Free the RX lists. */
3293         bge_free_rx_ring_std(sc);
3294
3295         /* Free jumbo RX list. */
3296         if (BGE_IS_JUMBO_CAPABLE(sc))
3297                 bge_free_rx_ring_jumbo(sc);
3298
3299         /* Free TX buffers. */
3300         bge_free_tx_ring(sc);
3301
3302         /*
3303          * Isolate/power down the PHY, but leave the media selection
3304          * unchanged so that things will be put back to normal when
3305          * we bring the interface back up.
3306          *
3307          * 'mii' may be NULL in the following cases:
3308          * - The device uses TBI.
3309          * - bge_stop() is called by bge_detach().
3310          */
3311         if (mii != NULL) {
3312                 itmp = ifp->if_flags;
3313                 ifp->if_flags |= IFF_UP;
3314                 ifm = mii->mii_media.ifm_cur;
3315                 mtmp = ifm->ifm_media;
3316                 ifm->ifm_media = IFM_ETHER|IFM_NONE;
3317                 mii_mediachg(mii);
3318                 ifm->ifm_media = mtmp;
3319                 ifp->if_flags = itmp;
3320         }
3321
3322         sc->bge_link = 0;
3323         sc->bge_coal_chg = 0;
3324
3325         sc->bge_tx_saved_considx = BGE_TXCONS_UNSET;
3326
3327         ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE);
3328         ifp->if_timer = 0;
3329 }
3330
3331 /*
3332  * Stop all chip I/O so that the kernel's probe routines don't
3333  * get confused by errant DMAs when rebooting.
3334  */
3335 static void
3336 bge_shutdown(device_t dev)
3337 {
3338         struct bge_softc *sc = device_get_softc(dev);
3339         struct ifnet *ifp = &sc->arpcom.ac_if;
3340
3341         lwkt_serialize_enter(ifp->if_serializer);
3342         bge_stop(sc);
3343         bge_reset(sc);
3344         lwkt_serialize_exit(ifp->if_serializer);
3345 }
3346
3347 static int
3348 bge_suspend(device_t dev)
3349 {
3350         struct bge_softc *sc = device_get_softc(dev);
3351         struct ifnet *ifp = &sc->arpcom.ac_if;
3352
3353         lwkt_serialize_enter(ifp->if_serializer);
3354         bge_stop(sc);
3355         lwkt_serialize_exit(ifp->if_serializer);
3356
3357         return 0;
3358 }
3359
3360 static int
3361 bge_resume(device_t dev)
3362 {
3363         struct bge_softc *sc = device_get_softc(dev);
3364         struct ifnet *ifp = &sc->arpcom.ac_if;
3365
3366         lwkt_serialize_enter(ifp->if_serializer);
3367
3368         if (ifp->if_flags & IFF_UP) {
3369                 bge_init(sc);
3370
3371                 if (!ifq_is_empty(&ifp->if_snd))
3372                         if_devstart(ifp);
3373         }
3374
3375         lwkt_serialize_exit(ifp->if_serializer);
3376
3377         return 0;
3378 }
3379
3380 static void
3381 bge_setpromisc(struct bge_softc *sc)
3382 {
3383         struct ifnet *ifp = &sc->arpcom.ac_if;
3384
3385         if (ifp->if_flags & IFF_PROMISC)
3386                 BGE_SETBIT(sc, BGE_RX_MODE, BGE_RXMODE_RX_PROMISC);
3387         else
3388                 BGE_CLRBIT(sc, BGE_RX_MODE, BGE_RXMODE_RX_PROMISC);
3389 }
3390
3391 static void
3392 bge_dma_free(struct bge_softc *sc)
3393 {
3394         int i;
3395
3396         /* Destroy RX mbuf DMA stuffs. */
3397         if (sc->bge_cdata.bge_rx_mtag != NULL) {
3398                 for (i = 0; i < BGE_STD_RX_RING_CNT; i++) {
3399                         bus_dmamap_destroy(sc->bge_cdata.bge_rx_mtag,
3400                             sc->bge_cdata.bge_rx_std_dmamap[i]);
3401                 }
3402                 bus_dmamap_destroy(sc->bge_cdata.bge_rx_mtag,
3403                                    sc->bge_cdata.bge_rx_tmpmap);
3404                 bus_dma_tag_destroy(sc->bge_cdata.bge_rx_mtag);
3405         }
3406
3407         /* Destroy TX mbuf DMA stuffs. */
3408         if (sc->bge_cdata.bge_tx_mtag != NULL) {
3409                 for (i = 0; i < BGE_TX_RING_CNT; i++) {
3410                         bus_dmamap_destroy(sc->bge_cdata.bge_tx_mtag,
3411                             sc->bge_cdata.bge_tx_dmamap[i]);
3412                 }
3413                 bus_dma_tag_destroy(sc->bge_cdata.bge_tx_mtag);
3414         }
3415
3416         /* Destroy standard RX ring */
3417         bge_dma_block_free(sc->bge_cdata.bge_rx_std_ring_tag,
3418                            sc->bge_cdata.bge_rx_std_ring_map,
3419                            sc->bge_ldata.bge_rx_std_ring);
3420
3421         if (BGE_IS_JUMBO_CAPABLE(sc))
3422                 bge_free_jumbo_mem(sc);
3423
3424         /* Destroy RX return ring */
3425         bge_dma_block_free(sc->bge_cdata.bge_rx_return_ring_tag,
3426                            sc->bge_cdata.bge_rx_return_ring_map,
3427                            sc->bge_ldata.bge_rx_return_ring);
3428
3429         /* Destroy TX ring */
3430         bge_dma_block_free(sc->bge_cdata.bge_tx_ring_tag,
3431                            sc->bge_cdata.bge_tx_ring_map,
3432                            sc->bge_ldata.bge_tx_ring);
3433
3434         /* Destroy status block */
3435         bge_dma_block_free(sc->bge_cdata.bge_status_tag,
3436                            sc->bge_cdata.bge_status_map,
3437                            sc->bge_ldata.bge_status_block);
3438
3439         /* Destroy statistics block */
3440         bge_dma_block_free(sc->bge_cdata.bge_stats_tag,
3441                            sc->bge_cdata.bge_stats_map,
3442                            sc->bge_ldata.bge_stats);
3443
3444         /* Destroy the parent tag */
3445         if (sc->bge_cdata.bge_parent_tag != NULL)
3446                 bus_dma_tag_destroy(sc->bge_cdata.bge_parent_tag);
3447 }
3448
3449 static int
3450 bge_dma_alloc(struct bge_softc *sc)
3451 {
3452         struct ifnet *ifp = &sc->arpcom.ac_if;
3453         int i, error;
3454
3455         /*
3456          * Allocate the parent bus DMA tag appropriate for PCI.
3457          */
3458         error = bus_dma_tag_create(NULL, 1, 0,
3459                                    BUS_SPACE_MAXADDR, BUS_SPACE_MAXADDR,
3460                                    NULL, NULL,
3461                                    BUS_SPACE_MAXSIZE_32BIT, 0,
3462                                    BUS_SPACE_MAXSIZE_32BIT,
3463                                    0, &sc->bge_cdata.bge_parent_tag);
3464         if (error) {
3465                 if_printf(ifp, "could not allocate parent dma tag\n");
3466                 return error;
3467         }
3468
3469         /*
3470          * Create DMA tag and maps for RX mbufs.
3471          */
3472         error = bus_dma_tag_create(sc->bge_cdata.bge_parent_tag, 1, 0,
3473                                    BUS_SPACE_MAXADDR, BUS_SPACE_MAXADDR,
3474                                    NULL, NULL, MCLBYTES, 1, MCLBYTES,
3475                                    BUS_DMA_ALLOCNOW | BUS_DMA_WAITOK,
3476                                    &sc->bge_cdata.bge_rx_mtag);
3477         if (error) {
3478                 if_printf(ifp, "could not allocate RX mbuf dma tag\n");
3479                 return error;
3480         }
3481
3482         error = bus_dmamap_create(sc->bge_cdata.bge_rx_mtag,
3483                                   BUS_DMA_WAITOK, &sc->bge_cdata.bge_rx_tmpmap);
3484         if (error) {
3485                 bus_dma_tag_destroy(sc->bge_cdata.bge_rx_mtag);
3486                 sc->bge_cdata.bge_rx_mtag = NULL;
3487                 return error;
3488         }
3489
3490         for (i = 0; i < BGE_STD_RX_RING_CNT; i++) {
3491                 error = bus_dmamap_create(sc->bge_cdata.bge_rx_mtag,
3492                                           BUS_DMA_WAITOK,
3493                                           &sc->bge_cdata.bge_rx_std_dmamap[i]);
3494                 if (error) {
3495                         int j;
3496
3497                         for (j = 0; j < i; ++j) {
3498                                 bus_dmamap_destroy(sc->bge_cdata.bge_rx_mtag,
3499                                         sc->bge_cdata.bge_rx_std_dmamap[j]);
3500                         }
3501                         bus_dma_tag_destroy(sc->bge_cdata.bge_rx_mtag);
3502                         sc->bge_cdata.bge_rx_mtag = NULL;
3503
3504                         if_printf(ifp, "could not create DMA map for RX\n");
3505                         return error;
3506                 }
3507         }
3508
3509         /*
3510          * Create DMA tag and maps for TX mbufs.
3511          */
3512         error = bus_dma_tag_create(sc->bge_cdata.bge_parent_tag, 1, 0,
3513                                    BUS_SPACE_MAXADDR, BUS_SPACE_MAXADDR,
3514                                    NULL, NULL,
3515                                    BGE_JUMBO_FRAMELEN, BGE_NSEG_NEW, MCLBYTES,
3516                                    BUS_DMA_ALLOCNOW | BUS_DMA_WAITOK |
3517                                    BUS_DMA_ONEBPAGE,
3518                                    &sc->bge_cdata.bge_tx_mtag);
3519         if (error) {
3520                 if_printf(ifp, "could not allocate TX mbuf dma tag\n");
3521                 return error;
3522         }
3523
3524         for (i = 0; i < BGE_TX_RING_CNT; i++) {
3525                 error = bus_dmamap_create(sc->bge_cdata.bge_tx_mtag,
3526                                           BUS_DMA_WAITOK | BUS_DMA_ONEBPAGE,
3527                                           &sc->bge_cdata.bge_tx_dmamap[i]);
3528                 if (error) {
3529                         int j;
3530
3531                         for (j = 0; j < i; ++j) {
3532                                 bus_dmamap_destroy(sc->bge_cdata.bge_tx_mtag,
3533                                         sc->bge_cdata.bge_tx_dmamap[j]);
3534                         }
3535                         bus_dma_tag_destroy(sc->bge_cdata.bge_tx_mtag);
3536                         sc->bge_cdata.bge_tx_mtag = NULL;
3537
3538                         if_printf(ifp, "could not create DMA map for TX\n");
3539                         return error;
3540                 }
3541         }
3542
3543         /*
3544          * Create DMA stuffs for standard RX ring.
3545          */
3546         error = bge_dma_block_alloc(sc, BGE_STD_RX_RING_SZ,
3547                                     &sc->bge_cdata.bge_rx_std_ring_tag,
3548                                     &sc->bge_cdata.bge_rx_std_ring_map,
3549                                     (void *)&sc->bge_ldata.bge_rx_std_ring,
3550                                     &sc->bge_ldata.bge_rx_std_ring_paddr);
3551         if (error) {
3552                 if_printf(ifp, "could not create std RX ring\n");
3553                 return error;
3554         }
3555
3556         /*
3557          * Create jumbo buffer pool.
3558          */
3559         if (BGE_IS_JUMBO_CAPABLE(sc)) {
3560                 error = bge_alloc_jumbo_mem(sc);
3561                 if (error) {
3562                         if_printf(ifp, "could not create jumbo buffer pool\n");
3563                         return error;
3564                 }
3565         }
3566
3567         /*
3568          * Create DMA stuffs for RX return ring.
3569          */
3570         error = bge_dma_block_alloc(sc, BGE_RX_RTN_RING_SZ(sc),
3571                                     &sc->bge_cdata.bge_rx_return_ring_tag,
3572                                     &sc->bge_cdata.bge_rx_return_ring_map,
3573                                     (void *)&sc->bge_ldata.bge_rx_return_ring,
3574                                     &sc->bge_ldata.bge_rx_return_ring_paddr);
3575         if (error) {
3576                 if_printf(ifp, "could not create RX ret ring\n");
3577                 return error;
3578         }
3579
3580         /*
3581          * Create DMA stuffs for TX ring.
3582          */
3583         error = bge_dma_block_alloc(sc, BGE_TX_RING_SZ,
3584                                     &sc->bge_cdata.bge_tx_ring_tag,
3585                                     &sc->bge_cdata.bge_tx_ring_map,
3586                                     (void *)&sc->bge_ldata.bge_tx_ring,
3587                                     &sc->bge_ldata.bge_tx_ring_paddr);
3588         if (error) {
3589                 if_printf(ifp, "could not create TX ring\n");
3590                 return error;
3591         }
3592
3593         /*
3594          * Create DMA stuffs for status block.
3595          */
3596         error = bge_dma_block_alloc(sc, BGE_STATUS_BLK_SZ,
3597                                     &sc->bge_cdata.bge_status_tag,
3598                                     &sc->bge_cdata.bge_status_map,
3599                                     (void *)&sc->bge_ldata.bge_status_block,
3600                                     &sc->bge_ldata.bge_status_block_paddr);
3601         if (error) {
3602                 if_printf(ifp, "could not create status block\n");
3603                 return error;
3604         }
3605
3606         /*
3607          * Create DMA stuffs for statistics block.
3608          */
3609         error = bge_dma_block_alloc(sc, BGE_STATS_SZ,
3610                                     &sc->bge_cdata.bge_stats_tag,
3611                                     &sc->bge_cdata.bge_stats_map,
3612                                     (void *)&sc->bge_ldata.bge_stats,
3613                                     &sc->bge_ldata.bge_stats_paddr);
3614         if (error) {
3615                 if_printf(ifp, "could not create stats block\n");
3616                 return error;
3617         }
3618         return 0;
3619 }
3620
3621 static int
3622 bge_dma_block_alloc(struct bge_softc *sc, bus_size_t size, bus_dma_tag_t *tag,
3623                     bus_dmamap_t *map, void **addr, bus_addr_t *paddr)
3624 {
3625         bus_dmamem_t dmem;
3626         int error;
3627
3628         error = bus_dmamem_coherent(sc->bge_cdata.bge_parent_tag, PAGE_SIZE, 0,
3629                                     BUS_SPACE_MAXADDR, BUS_SPACE_MAXADDR,
3630                                     size, BUS_DMA_WAITOK | BUS_DMA_ZERO, &dmem);
3631         if (error)
3632                 return error;
3633
3634         *tag = dmem.dmem_tag;
3635         *map = dmem.dmem_map;
3636         *addr = dmem.dmem_addr;
3637         *paddr = dmem.dmem_busaddr;
3638
3639         return 0;
3640 }
3641
3642 static void
3643 bge_dma_block_free(bus_dma_tag_t tag, bus_dmamap_t map, void *addr)
3644 {
3645         if (tag != NULL) {
3646                 bus_dmamap_unload(tag, map);
3647                 bus_dmamem_free(tag, addr, map);
3648                 bus_dma_tag_destroy(tag);
3649         }
3650 }
3651
3652 /*
3653  * Grrr. The link status word in the status block does
3654  * not work correctly on the BCM5700 rev AX and BX chips,
3655  * according to all available information. Hence, we have
3656  * to enable MII interrupts in order to properly obtain
3657  * async link changes. Unfortunately, this also means that
3658  * we have to read the MAC status register to detect link
3659  * changes, thereby adding an additional register access to
3660  * the interrupt handler.
3661  *
3662  * XXX: perhaps link state detection procedure used for
3663  * BGE_CHIPID_BCM5700_B2 can be used for others BCM5700 revisions.
3664  */
3665 static void
3666 bge_bcm5700_link_upd(struct bge_softc *sc, uint32_t status __unused)
3667 {
3668         struct ifnet *ifp = &sc->arpcom.ac_if;
3669         struct mii_data *mii = device_get_softc(sc->bge_miibus);
3670
3671         mii_pollstat(mii);
3672
3673         if (!sc->bge_link &&
3674             (mii->mii_media_status & IFM_ACTIVE) &&
3675             IFM_SUBTYPE(mii->mii_media_active) != IFM_NONE) {
3676                 sc->bge_link++;
3677                 if (bootverbose)
3678                         if_printf(ifp, "link UP\n");
3679         } else if (sc->bge_link &&
3680             (!(mii->mii_media_status & IFM_ACTIVE) ||
3681             IFM_SUBTYPE(mii->mii_media_active) == IFM_NONE)) {
3682                 sc->bge_link = 0;
3683                 if (bootverbose)
3684                         if_printf(ifp, "link DOWN\n");
3685         }
3686
3687         /* Clear the interrupt. */
3688         CSR_WRITE_4(sc, BGE_MAC_EVT_ENB, BGE_EVTENB_MI_INTERRUPT);
3689         bge_miibus_readreg(sc->bge_dev, 1, BRGPHY_MII_ISR);
3690         bge_miibus_writereg(sc->bge_dev, 1, BRGPHY_MII_IMR, BRGPHY_INTRS);
3691 }
3692
3693 static void
3694 bge_tbi_link_upd(struct bge_softc *sc, uint32_t status)
3695 {
3696         struct ifnet *ifp = &sc->arpcom.ac_if;
3697
3698 #define PCS_ENCODE_ERR  (BGE_MACSTAT_PORT_DECODE_ERROR|BGE_MACSTAT_MI_COMPLETE)
3699
3700         /*
3701          * Sometimes PCS encoding errors are detected in
3702          * TBI mode (on fiber NICs), and for some reason
3703          * the chip will signal them as link changes.
3704          * If we get a link change event, but the 'PCS
3705          * encoding error' bit in the MAC status register
3706          * is set, don't bother doing a link check.
3707          * This avoids spurious "gigabit link up" messages
3708          * that sometimes appear on fiber NICs during
3709          * periods of heavy traffic.
3710          */
3711         if (status & BGE_MACSTAT_TBI_PCS_SYNCHED) {
3712                 if (!sc->bge_link) {
3713                         sc->bge_link++;
3714                         if (sc->bge_asicrev == BGE_ASICREV_BCM5704) {
3715                                 BGE_CLRBIT(sc, BGE_MAC_MODE,
3716                                     BGE_MACMODE_TBI_SEND_CFGS);
3717                         }
3718                         CSR_WRITE_4(sc, BGE_MAC_STS, 0xFFFFFFFF);
3719
3720                         if (bootverbose)
3721                                 if_printf(ifp, "link UP\n");
3722
3723                         ifp->if_link_state = LINK_STATE_UP;
3724                         if_link_state_change(ifp);
3725                 }
3726         } else if ((status & PCS_ENCODE_ERR) != PCS_ENCODE_ERR) {
3727                 if (sc->bge_link) {
3728                         sc->bge_link = 0;
3729
3730                         if (bootverbose)
3731                                 if_printf(ifp, "link DOWN\n");
3732
3733                         ifp->if_link_state = LINK_STATE_DOWN;
3734                         if_link_state_change(ifp);
3735                 }
3736         }
3737
3738 #undef PCS_ENCODE_ERR
3739
3740         /* Clear the attention. */
3741         CSR_WRITE_4(sc, BGE_MAC_STS, BGE_MACSTAT_SYNC_CHANGED |
3742             BGE_MACSTAT_CFG_CHANGED | BGE_MACSTAT_MI_COMPLETE |
3743             BGE_MACSTAT_LINK_CHANGED);
3744 }
3745
3746 static void
3747 bge_copper_link_upd(struct bge_softc *sc, uint32_t status __unused)
3748 {
3749         /*
3750          * Check that the AUTOPOLL bit is set before
3751          * processing the event as a real link change.
3752          * Turning AUTOPOLL on and off in the MII read/write
3753          * functions will often trigger a link status
3754          * interrupt for no reason.
3755          */
3756         if (CSR_READ_4(sc, BGE_MI_MODE) & BGE_MIMODE_AUTOPOLL) {
3757                 struct ifnet *ifp = &sc->arpcom.ac_if;
3758                 struct mii_data *mii = device_get_softc(sc->bge_miibus);
3759
3760                 mii_pollstat(mii);
3761
3762                 if (!sc->bge_link &&
3763                     (mii->mii_media_status & IFM_ACTIVE) &&
3764                     IFM_SUBTYPE(mii->mii_media_active) != IFM_NONE) {
3765                         sc->bge_link++;
3766                         if (bootverbose)
3767                                 if_printf(ifp, "link UP\n");
3768                 } else if (sc->bge_link &&
3769                     (!(mii->mii_media_status & IFM_ACTIVE) ||
3770                     IFM_SUBTYPE(mii->mii_media_active) == IFM_NONE)) {
3771                         sc->bge_link = 0;
3772                         if (bootverbose)
3773                                 if_printf(ifp, "link DOWN\n");
3774                 }
3775         }
3776
3777         /* Clear the attention. */
3778         CSR_WRITE_4(sc, BGE_MAC_STS, BGE_MACSTAT_SYNC_CHANGED |
3779             BGE_MACSTAT_CFG_CHANGED | BGE_MACSTAT_MI_COMPLETE |
3780             BGE_MACSTAT_LINK_CHANGED);
3781 }
3782
3783 static int
3784 bge_sysctl_rx_coal_ticks(SYSCTL_HANDLER_ARGS)
3785 {
3786         struct bge_softc *sc = arg1;
3787
3788         return bge_sysctl_coal_chg(oidp, arg1, arg2, req,
3789                                    &sc->bge_rx_coal_ticks,
3790                                    BGE_RX_COAL_TICKS_CHG);
3791 }
3792
3793 static int
3794 bge_sysctl_tx_coal_ticks(SYSCTL_HANDLER_ARGS)
3795 {
3796         struct bge_softc *sc = arg1;
3797
3798         return bge_sysctl_coal_chg(oidp, arg1, arg2, req,
3799                                    &sc->bge_tx_coal_ticks,
3800                                    BGE_TX_COAL_TICKS_CHG);
3801 }
3802
3803 static int
3804 bge_sysctl_rx_max_coal_bds(SYSCTL_HANDLER_ARGS)
3805 {
3806         struct bge_softc *sc = arg1;
3807
3808         return bge_sysctl_coal_chg(oidp, arg1, arg2, req,
3809                                    &sc->bge_rx_max_coal_bds,
3810                                    BGE_RX_MAX_COAL_BDS_CHG);
3811 }
3812
3813 static int
3814 bge_sysctl_tx_max_coal_bds(SYSCTL_HANDLER_ARGS)
3815 {
3816         struct bge_softc *sc = arg1;
3817
3818         return bge_sysctl_coal_chg(oidp, arg1, arg2, req,
3819                                    &sc->bge_tx_max_coal_bds,
3820                                    BGE_TX_MAX_COAL_BDS_CHG);
3821 }
3822
3823 static int
3824 bge_sysctl_coal_chg(SYSCTL_HANDLER_ARGS, uint32_t *coal,
3825                     uint32_t coal_chg_mask)
3826 {
3827         struct bge_softc *sc = arg1;
3828         struct ifnet *ifp = &sc->arpcom.ac_if;
3829         int error = 0, v;
3830
3831         lwkt_serialize_enter(ifp->if_serializer);
3832
3833         v = *coal;
3834         error = sysctl_handle_int(oidp, &v, 0, req);
3835         if (!error && req->newptr != NULL) {
3836                 if (v < 0) {
3837                         error = EINVAL;
3838                 } else {
3839                         *coal = v;
3840                         sc->bge_coal_chg |= coal_chg_mask;
3841                 }
3842         }
3843
3844         lwkt_serialize_exit(ifp->if_serializer);
3845         return error;
3846 }
3847
3848 static void
3849 bge_coal_change(struct bge_softc *sc)
3850 {
3851         struct ifnet *ifp = &sc->arpcom.ac_if;
3852         uint32_t val;
3853
3854         ASSERT_SERIALIZED(ifp->if_serializer);
3855
3856         if (sc->bge_coal_chg & BGE_RX_COAL_TICKS_CHG) {
3857                 CSR_WRITE_4(sc, BGE_HCC_RX_COAL_TICKS,
3858                             sc->bge_rx_coal_ticks);
3859                 DELAY(10);
3860                 val = CSR_READ_4(sc, BGE_HCC_RX_COAL_TICKS);
3861
3862                 if (bootverbose) {
3863                         if_printf(ifp, "rx_coal_ticks -> %u\n",
3864                                   sc->bge_rx_coal_ticks);
3865                 }
3866         }
3867
3868         if (sc->bge_coal_chg & BGE_TX_COAL_TICKS_CHG) {
3869                 CSR_WRITE_4(sc, BGE_HCC_TX_COAL_TICKS,
3870                             sc->bge_tx_coal_ticks);
3871                 DELAY(10);
3872                 val = CSR_READ_4(sc, BGE_HCC_TX_COAL_TICKS);
3873
3874                 if (bootverbose) {
3875                         if_printf(ifp, "tx_coal_ticks -> %u\n",
3876                                   sc->bge_tx_coal_ticks);
3877                 }
3878         }
3879
3880         if (sc->bge_coal_chg & BGE_RX_MAX_COAL_BDS_CHG) {
3881                 CSR_WRITE_4(sc, BGE_HCC_RX_MAX_COAL_BDS,
3882                             sc->bge_rx_max_coal_bds);
3883                 DELAY(10);
3884                 val = CSR_READ_4(sc, BGE_HCC_RX_MAX_COAL_BDS);
3885
3886                 if (bootverbose) {
3887                         if_printf(ifp, "rx_max_coal_bds -> %u\n",
3888                                   sc->bge_rx_max_coal_bds);
3889                 }
3890         }
3891
3892         if (sc->bge_coal_chg & BGE_TX_MAX_COAL_BDS_CHG) {
3893                 CSR_WRITE_4(sc, BGE_HCC_TX_MAX_COAL_BDS,
3894                             sc->bge_tx_max_coal_bds);
3895                 DELAY(10);
3896                 val = CSR_READ_4(sc, BGE_HCC_TX_MAX_COAL_BDS);
3897
3898                 if (bootverbose) {
3899                         if_printf(ifp, "tx_max_coal_bds -> %u\n",
3900                                   sc->bge_tx_max_coal_bds);
3901                 }
3902         }
3903
3904         sc->bge_coal_chg = 0;
3905 }
3906
3907 static void
3908 bge_enable_intr(struct bge_softc *sc)
3909 {
3910         struct ifnet *ifp = &sc->arpcom.ac_if;
3911
3912         lwkt_serialize_handler_enable(ifp->if_serializer);
3913
3914         /*
3915          * Enable interrupt.
3916          */
3917         bge_writembx(sc, BGE_MBX_IRQ0_LO, 0);
3918
3919         /*
3920          * Unmask the interrupt when we stop polling.
3921          */
3922         BGE_CLRBIT(sc, BGE_PCI_MISC_CTL, BGE_PCIMISCCTL_MASK_PCI_INTR);
3923
3924         /*
3925          * Trigger another interrupt, since above writing
3926          * to interrupt mailbox0 may acknowledge pending
3927          * interrupt.
3928          */
3929         BGE_SETBIT(sc, BGE_MISC_LOCAL_CTL, BGE_MLC_INTR_SET);
3930 }
3931
3932 static void
3933 bge_disable_intr(struct bge_softc *sc)
3934 {
3935         struct ifnet *ifp = &sc->arpcom.ac_if;
3936
3937         /*
3938          * Mask the interrupt when we start polling.
3939          */
3940         BGE_SETBIT(sc, BGE_PCI_MISC_CTL, BGE_PCIMISCCTL_MASK_PCI_INTR);
3941
3942         /*
3943          * Acknowledge possible asserted interrupt.
3944          */
3945         bge_writembx(sc, BGE_MBX_IRQ0_LO, 1);
3946
3947         lwkt_serialize_handler_disable(ifp->if_serializer);
3948 }
3949
3950 static int
3951 bge_get_eaddr_mem(struct bge_softc *sc, uint8_t ether_addr[])
3952 {
3953         uint32_t mac_addr;
3954         int ret = 1;
3955
3956         mac_addr = bge_readmem_ind(sc, 0x0c14);
3957         if ((mac_addr >> 16) == 0x484b) {
3958                 ether_addr[0] = (uint8_t)(mac_addr >> 8);
3959                 ether_addr[1] = (uint8_t)mac_addr;
3960                 mac_addr = bge_readmem_ind(sc, 0x0c18);
3961                 ether_addr[2] = (uint8_t)(mac_addr >> 24);
3962                 ether_addr[3] = (uint8_t)(mac_addr >> 16);
3963                 ether_addr[4] = (uint8_t)(mac_addr >> 8);
3964                 ether_addr[5] = (uint8_t)mac_addr;
3965                 ret = 0;
3966         }
3967         return ret;
3968 }
3969
3970 static int
3971 bge_get_eaddr_nvram(struct bge_softc *sc, uint8_t ether_addr[])
3972 {
3973         int mac_offset = BGE_EE_MAC_OFFSET;
3974
3975         if (sc->bge_asicrev == BGE_ASICREV_BCM5906)
3976                 mac_offset = BGE_EE_MAC_OFFSET_5906;
3977
3978         return bge_read_nvram(sc, ether_addr, mac_offset + 2, ETHER_ADDR_LEN);
3979 }
3980
3981 static int
3982 bge_get_eaddr_eeprom(struct bge_softc *sc, uint8_t ether_addr[])
3983 {
3984         if (sc->bge_flags & BGE_FLAG_NO_EEPROM)
3985                 return 1;
3986
3987         return bge_read_eeprom(sc, ether_addr, BGE_EE_MAC_OFFSET + 2,
3988                                ETHER_ADDR_LEN);
3989 }
3990
3991 static int
3992 bge_get_eaddr(struct bge_softc *sc, uint8_t eaddr[])
3993 {
3994         static const bge_eaddr_fcn_t bge_eaddr_funcs[] = {
3995                 /* NOTE: Order is critical */
3996                 bge_get_eaddr_mem,
3997                 bge_get_eaddr_nvram,
3998                 bge_get_eaddr_eeprom,
3999                 NULL
4000         };
4001         const bge_eaddr_fcn_t *func;
4002
4003         for (func = bge_eaddr_funcs; *func != NULL; ++func) {
4004                 if ((*func)(sc, eaddr) == 0)
4005                         break;
4006         }
4007         return (*func == NULL ? ENXIO : 0);
4008 }